Magazine well for a self-loading firearm

Abstract

Magazine well (1) for a self-loading firearm, comprising a magazine housing (2) which is provided with a recess (4) on its circumference and has an axially extending receiving space (5) for a magazine of the self-loading firearm, and a replaceable insert (3) which can be inserted into the recess (4) of the magazine housing (2), wherein the replaceable insert (3) comprises a pre-tensioned slide (12) which is displaceably mounted in the replaceable insert (3) and via which a bolt catch lever (30) of the self-loading firearm can be axially acted upon.

Description

[0001] The present invention relates to a magazine well for a self-loading firearm, in particular for a semi-automatic long or short-shot weapon, and to a self-loading firearm, in particular a semi-automatic long or short-shot weapon, comprising the magazine well according to the invention.

[0002] Self-loading firearms are typically designed so that their bolt remains open after the last round has been fired from a magazine. This is achieved, according to the current state of the art, by the magazine follower, which pushes the cartridges upward in the magazine, simultaneously acting on the weapon's bolt stop lever in its uppermost position, causing it to push upward over its driver lug and thus in front of the bolt, thus stopping it in its further travel.

[0003] For example, EP 3 591 329 A1 discloses a grip or housing for a self-loading firearm with a bolt catch device that holds the bolt in the open position after the last cartridge has been fired. The use of different magazines from different manufacturers is not intended for this known self-loading firearm.

[0004] In order to be able to use as many different magazines from different manufacturers as possible with one and the same firearm, the respective magazine is provided with a so-called adapter ring, the external dimensions of which are adapted to the internal dimensions of the existing magazine well of the firearm.

[0005] However, in order to correctly control the slide stop lever, the respective magazine must also be adjusted. This usually requires replacing the slide stop lever with a suitable one. Depending on the weapon design, this replacement requires a significant amount of disassembly of the firearm, which is time-consuming and sometimes very difficult or even impossible for laypersons.

[0006] DE 20 2017 005 204 U1 describes a magazine adapter for a self-loading rifle that can be attached to the lower receiver of the firearm using screws in factory-installed receptacles. Minor modifications are intended to enable the use of various commercially available magazines in the self-loading rifle. This known magazine adapter is shaped like a rectangular, enclosed shaft with two longitudinal walls and two transverse walls. In the upper area, two parallel flanges protrude beyond the transverse side wall, through which the magazine adapter is screwed to the firearm.

[0007] WO 2013 / 017907 A1 describes a magazine adapter for a pistol that is inserted into the magazine well of the firearm in place of the original magazine. This firearm features a slide stop with a body and a cylindrical rod attached to the body, which serves to hold the firearm's bolt open when the magazine well and the other magazine are in use. A spring sits on the rod. The modified slide stop for the other magazine serves to replace the firearm's original slide stop. In this known solution, the slide stop has a wing that is pushed upwards by the magazine follower. The magazine adapter is inserted almost completely into the firearm's magazine well, while the slide stop is located at the top of the bolt housing in the area of ​​the magazine well.

[0008] US Patent No. 6,070,352 A describes an adapter used to convert a rifle's receiver into one that accommodates cartridges of a shorter length. The adapter is inserted into the receiver of the weapon to create a smaller magazine well. The adapter includes an ejector and a slide stop lever, which slides vertically within the adapter body and takes over the slide stop function after the last cartridge has been fired.

[0009] Furthermore, US Patent No. 8,898,946 B1 discloses a magazine adapter that allows the use of magazines for ammunition whose overall length is shorter than that of the original ammunition of a firearm model. The adapter is designed to fit into the magazine well of a firearm and accommodate a magazine for a smaller caliber.

[0010] From US 8 387 296 B2, a bolt catching device for firearms, in particular of the AR-15 / M16 type, is also known, which comprises a receiver with an open receiving chamber and a magazine that can be attached from below.

[0011] Based on the aforementioned prior art, the object of the present invention, according to a first aspect, is to provide a magazine well for a self-loading firearm, in particular a semi-automatic long- or short-shot weapon, which enables easy adaptation to different magazine types and thereby ensures reliable function of the self-loading firearm.

[0012] In a further aspect, the object of the present invention is to provide a self-loading firearm that is improved compared to the prior art, such as a semi-automatic long- or short-shot weapon, in particular one that is constructed in such a way that adaptation to different magazine types is possible by simply and quickly exchanging a few components, thereby ensuring reliable function of the self-loading firearm.

[0013] The solution to the above-mentioned problem provides, on the one hand, a magazine well for a self-loading firearm having the features of claim 1 and, on the other hand, a self-loading firearm having the features of claim 17.

[0014] The magazine shaft according to the invention comprises a magazine housing which is provided with a recess on its circumference and has an axially extending receiving space for a magazine of the self-loading firearm, as well as a replaceable insert which can be inserted into the recess of the magazine housing, wherein the replaceable insert comprises a pre-tensioned slide which is displaceably mounted in the replaceable insert and via which a bolt catch lever of the self-loading firearm can be axially acted upon or controlled.

[0015] In the same way, the present invention provides a self-loading firearm, preferably a self-loading long- or short-shot weapon, which comprises the magazine well according to the invention.

[0016] According to the invention, it is therefore proposed to provide the magazine well or its housing with a recess on its circumference, which is designed and suitable for receiving an interchangeable insert that can be inserted into this recess. The interchangeable insert, in turn, has an insertable slide. The slide can then act on the slide stop lever of the self-loading firearm in the uppermost position. The invention thus takes a different approach than the previously mentioned prior art and thus now enables different positions and / or geometries of the magazine feeder to be compensated for safely and easily without having to extensively disassemble the firearm to replace the slide stop lever.In the solution according to the invention, the magazine well essentially consists of two components, namely the magazine housing, which largely forms the basic shape of the magazine well and has a recess in one area. A second component in the form of an interchangeable insert is then inserted into this recess area, which complements the basic shape of the magazine housing that is left out here. The interchangeable insert is in turn designed to accommodate an axially displaceable slide whose task is to act on the bolt catch lever so that it fulfills its function of catching the bolt in the open position. The slide is designed in such a way that replacing the bolt catch lever is not necessary when using a different magazine.In other words, the entire interchangeable insert has a slide designed for a specific magazine from one manufacturer, so that different magazine types can be used in a single self-loading firearm using different interchangeable inserts without having to replace the slide stop lever of this self-loading firearm.

[0017] In this context, it is advantageous to color-code the interchangeable inserts and the adapter rings to match the respective magazine type. Thus, a self-loading firearm with the magazine well according to the invention can be converted particularly easily and quickly to a specific magazine type, for example, by using an interchangeable insert and an adapter ring with a first color for a first magazine type. Accordingly, the self-loading firearm comprising the magazine well according to the invention with an interchangeable insert and an adapter ring in a further color can be used with a second magazine type, and so on, with the firing function always being ensured by the slider designed for the magazine type.

[0018] In a further aspect, the present invention therefore also relates to an interchangeable insert for use in a magazine well for a self-loading firearm, wherein the magazine well has a magazine housing which is provided on its circumference with a recess for the interchangeable insert and has an axially extending receiving space for a magazine of the self-loading firearm, wherein the interchangeable insert comprises a pre-tensioned slide which is displaceably mounted in the interchangeable insert and via which a bolt catch lever of the self-loading firearm can be axially acted upon.

[0019] In a further aspect, the present invention also relates to an adapter ring for use in the magazine well according to the invention, wherein the adapter ring's external dimensions are adapted to the internal dimensions of the magazine well, in particular to its axial receiving space. Such adapter rings have (or consist of) an annular body and are each designed for one or more specific magazine types, so that a magazine from a third-party manufacturer can be inserted into a magazine well of the firearm via such an adapter ring.

[0020] As already explained, it is advantageous to color-match the interchangeable inserts and the adapter rings to match the respective magazine type. In a particularly advantageous aspect, the present invention therefore relates to a system comprising the interchangeable insert according to the invention and the adapter ring according to the invention, wherein the interchangeable insert and the adapter ring are colored the same color.

[0021] Further advantageous embodiments of the invention are specified in the dependent claims. The features listed individually in the dependent claims can be combined with one another in a technologically expedient manner and can define further embodiments of the invention. Furthermore, the features specified in the claims are further specified and explained in the description, where further preferred embodiments of the invention are presented.

[0022] In a particularly advantageous embodiment, the slide has a driver element at its first distal end section, via which the slide can be axially acted upon by a magazine feeder, so that the slide then axially acts upon or controls the slide stop of the self-loading firearm, particularly preferably via a tongue formed on the end section. This configuration allows the use of a slide stop without a nose extending vertically into the receiving space, which is common in state-of-the-art self-loading firearms. A slide stop is usually made of a high-strength metallic material. Complex geometries, such as the formation of a vertical nose, make the manufacture of such slide stop levers complex and thus increase production costs.A slide stop lever designed without a lug is therefore simpler and more cost-effective to manufacture. In this context, it is advantageous for the self-loading weapon to have no lug on its slide stop lever.

[0023] The slide is preferably designed as a flat, elongated bent part or shaped part and, when installed, extends with its main axis essentially in a vertical direction when the barrel of the self-loading firearm is aligned horizontally.

[0024] Advantageously, it is provided that the slide comprises an axially extending main section with a first end facing the driver element and a second end arranged axially opposite, wherein the main section is displaceably mounted in a guide channel of the interchangeable insert at least over part of its length.

[0025] In order to be able to replace the slide, which is designed as a bent part or shaped part, particularly easily and quickly, it is preferably provided that it has a plurality of wing elements arranged on its main section, which particularly preferably extend perpendicularly from the main section, in particular from its longitudinal sides.

[0026] At the first axial end of the main section, the slide preferably has an axially extending head section, which is radially offset from the main section and from which the driver element extends perpendicularly. Furthermore, the head section has a tongue that extends axially and via which the bolt stop lever of the firearm can be axially acted upon. This allows the slide to be controlled by the magazine feeder, in particular by the latter acting upon the driver element, whereby the slide then acts on the bolt stop lever of the self-loading firearm via the tongue.

[0027] In order for the slider to return to its home position after inserting a new magazine, it is advantageously pre-tensioned by a spring element, which is particularly preferably arranged on the interchangeable insert and engages a second distal end section of the slider.

[0028] In a further advantageous embodiment, the slider has a first leg section extending perpendicularly from the second axial end of the main section, wherein the first leg section is particularly preferably arranged in the same spatial plane as the main section. The second distal end section of the slider is then preferably formed by a second leg section which extends as an angled extension from the first leg section. Such an embodiment, in combination with two stop surfaces, enables a defined movement of the slider within the interchangeable insert. In its axial home position, the slider rests against the first stop surface, which the interchangeable insert preferably has on its inner side facing the receiving space.The slider's axial movement is limited by the second stop surface, which is preferably also formed on the inside of the interchangeable insert facing the receiving space. It is advantageously provided that the two stop surfaces are configured to correspond to the two longitudinal sides of the first leg section.

[0029] The magazine shaft can have different connecting means by means of which the interchangeable insert can be securely fixed in the recess of the magazine housing. For example, the magazine housing can preferably have at least one or more projections in the region of the recess, which, when inserted, form a plug-in connection with at least one or then correspondingly several hook-like connecting elements arranged on the inside of the interchangeable insert. Furthermore, a radially inwardly offset wall section of the recess can preferably form a plug-in connection with at least one further hook-like connecting element arranged on the inside of the interchangeable insert when inserted. In addition, the magazine housing can preferably have at least one fastening element in the region of the recess, by means of which the interchangeable insert can be non-positively connected to the magazine housing.

[0030] According to a preferred development of the present invention, the magazine shaft has at least one radially inwardly offset wall section in the region of the recess. The recess of the magazine housing and the interchangeable insert are preferably designed such that, when the interchangeable insert is inserted, a cavity is formed between the wall section and the inside of the interchangeable insert, which cavity at least partially accommodates the slide. The wall section, which runs radially further inward in the magazine housing relative to the outer contour and which preferably extends essentially in the main direction of the magazine housing, i.e. parallel to its axis and to the insertion direction of the magazine, essentially creates a chamber which is delimited on the inside by the wall section and on the outside by the outer wall of the interchangeable insert when the latter is inserted into the recess of the magazine shaft. This chamber then forms a receiving space for the slide.The wall section thus separates the receiving space for the slide from the shaft area which accommodates the magazine of the self-loading weapon.

[0031] The invention and the technical environment are explained in more detail below with reference to the figures. It should be noted that the invention is not intended to be limited by the exemplary embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and combine them with other components and findings from the present description and / or figures. In particular, it should be noted that the figures and in particular the illustrated proportions are only schematic. The same reference numerals denote the same objects, so that explanations from other figures can be used as a supplement if necessary. They show: Fig. 1 is a perspective view of a magazine housing according to an exemplary embodiment of the present invention; Fig. 2 a perspective view of the magazine housing according to Fig. 1 with an interchangeable insert inserted into the recess; Fig. 3 a perspective detailed view of the slider; Fig. 4 a perspective view of the interchangeable insert with slider seen from the inside; Fig. 5 a perspective view of the representation according to Fig. 2, with the interchangeable insert shown partially transparent; and Fig. 6 a perspective partial view of a section of a self-loading firearm in the area of ​​the magazine well.

[0032] The following will firstly refer to the Fig. 1 and Fig. 2 the magazine shaft 1 is explained in more detail, which is essentially formed by the magazine housing 2 and the interchangeable insert 3.

[0033] The Fig. 1 shows a perspective view of the magazine housing 2 without the interchangeable insert 3, while the Fig. 2 shows a perspective view of the magazine well 1 in an assembled state, i.e. the magazine housing 2 with the interchangeable insert 3 inserted into its recess 4. Fig. The magazine housing 2 shown in Figure 1 has the shape of a shaft with circumferential walls that enclose an axial receiving space 5 into which the magazine (not shown) of the self-loading firearm is inserted, if necessary via a suitable adapter ring (not shown). The outline geometry of the magazine housing 2 is complex and can be described as consisting of two approximately rectangular basic shapes, a slightly wider front rectangular hollow shaft section 6, viewed in the firing direction of the firearm, in one corner area of ​​which the recess 4 is located, and a somewhat narrower rear compact connecting section 7, via which the entire magazine shaft 1 is attached to the frame of the firearm by means of suitable fastening means, such as screws or the like (see Fig. 5). In the corner area containing the recess 4, the outline of the front shaft section 6 is slightly rounded. The receiving space 5, enclosed by the surrounding walls of the front shaft section 6, serves to accommodate the magazine.

[0034] As shown by the Fig. 1, the wall 8 of the front shaft section 6, which forms the outer contour, is interrupted in the corner area with the recess 4. However, there is a wall section 9 which is shortened axially upwards and downwards in height, which is offset radially inwards and complements the inner contour of the front shaft section 6 in this area, while the outer contour of the magazine housing 2 is not present here. The space formed by the recess 4, which extends radially outwards from the wall section 9, is filled by the interchangeable insert 3 after it has been inserted, for example by pushing it into the recess 4 from the underside. This is shown in the view according to Fig. 2 and Fig. 5 shown.

[0035] The interchangeable insert 3 also has a wall 10 forming the outer contour, which extends over the peripheral area of ​​the recess 4 and complements the outer wall 8 of the front shaft section 6 forming the outer contour in this area in such a way that when the interchangeable insert 3 is inserted, a virtually seamless outer contour of the magazine housing 2 or the magazine shaft 1 results. Furthermore, one can see from the two Fig. 1 and Fig. 2, that the front shaft section 6 of the magazine housing 2 is widened in its lower area, so that a kind of bulge or a so-called jet funnel 11 is created in the form of a widening, which is also present in the form of the interchangeable insert 3.

[0036] The interchangeable insert 3 further comprises a pre-tensioned slide 12, which Fig. 2 is only partially visible and is described below with reference to Fig. 3. A slide stop lever of the self-loading firearm can be axially actuated or controlled via the slide 12, which is displaceably mounted in the interchangeable insert 3. This is achieved by the slide 12, in particular its driver element 13, being moved axially upwards by a magazine feeder (not shown) after the last cartridge has been fired, so that the slide stop lever is then also moved axially upwards via the slide 12, in particular via its tongue 16.1, and thereby blocks the bolt in the open position, which in the Fig. 5 is shown.

[0037] The slide 12 is designed here as a flat, elongated bent or formed part and, when installed with the barrel of the self-loading firearm aligned horizontally, extends with its main axis essentially in the axial direction. The slide 12 comprises an axially extending main section 14 with a first end facing the driver element 13 and a second end arranged axially opposite. Two wing elements 15 are provided on each of the longitudinal sides of the main section 14, via which the slide 12 is guided in a guide channel of the interchangeable insert 3.

[0038] Adjoining the first axial end of the main section 14 is a head section 16 of the slider 12, which forms the first distal end section 17 and also extends axially with respect to the main section 14, but is radially offset therefrom. In other words, the head section 16, as can also be seen from Fig. 2, is angled inwardly from the main section 14 into the receiving space 5, resulting in a cranking of the slide 12 in this area. From this head section 16, the driver element 13 then extends in a vertical direction, i.e., further inwardly into the receiving space 5 of the magazine housing 2. As can also be seen from the illustration, the head section 16 comprises the tongue 16.1, via which the slide stop lever can be axially acted upon.

[0039] In the lower end region of the main section 14, the slider 12 further comprises a first leg section 18 which is angled at a right angle and thus horizontally in the installed state and which lies in the same spatial plane as the main section 14. The second leg section 19 then extends from the first leg section 18 as an angled extension, forming the second distal end section 20 of the slider 12.

[0040] Fig. Figure 4 now shows the interchangeable insert 3 with its inner side facing the receiving space 5. Visible here is, on the one hand, the slide 12, which is slidably mounted over a partial length of its main section 14 in a guide channel 21 of the interchangeable insert 3. For inserting and, if necessary, replacing the slide 12, the guide channel 21 has radially opposite recesses 22 through which the slide 12 with its wing elements 15 can be inserted.

[0041] In the illustration shown here, the slider 12 is in its axial home position. Here, the lower longitudinal side of the first leg portion 18 of the slider 12 rests against a first stop surface 23 of the interchangeable insert 3, which extends substantially perpendicular to the guide channel 21. The slider 12 is also preloaded by a spring element 24, for example a spiral spring, arranged in the interchangeable insert 3. As can be seen from the illustration, the spring element 24 engages the second distal end portion 20, in particular the angled second leg portion 19 of the slider 12, thereby transmitting a spring force thereto.

[0042] Furthermore, the interchangeable insert 3 has on its inner side a second stop surface 25, via which the slide 12, in particular via the upper longitudinal side of the first leg section 18, is limited in its axial movement when it is moved via the feeder of the magazine against the force of the spring element 24, ie against its restoring force.

[0043] In order to fasten the interchangeable insert 3 to the magazine housing 2, several connecting means are provided in the present embodiment. Firstly, the magazine housing 2 has three separately formed projections 26.1, 27.1, 28.1 in the area of ​​the recess 4, which, when inserted, form a type of plug-in connection with corresponding hook-like connecting elements 26.2, 27.2, 28.2 arranged on the inside of the interchangeable insert 3. As can be seen from the illustration in Fig. 1, one of these projections 26.1 is formed directly by the wall section 9. Furthermore, the magazine housing 2 has a fastening element 29.1 in the region of the recess 4, via which the interchangeable insert 3 can be connected to the magazine housing 2 in a force-fitting manner, in particular via a screw connection. For this purpose, the fastening element 29.1 has a threaded bore. The interchangeable insert 3, on the other hand, has a plate-shaped abutment 29.2 with a hole. The interchangeable insert 3 is first inserted via the connecting means 26, 27, 28 during insertion and can then be fixed via a screw connection.

[0044] Fig. Figure 5 shows the magazine well 1 in an assembled state, with the outer contour surface of the interchangeable insert 3 being shown as a transparent surface so that the arrangement of the slide 12 and the spring element 24 can be seen. As can be seen from the illustration, the recess 4 of the magazine housing 2 and the interchangeable insert 3 are designed such that, when the interchangeable insert 3 is inserted, a cavity is formed between the wall section 9 and the inside of the interchangeable insert 3, which cavity at least partially accommodates the slide 12. In particular, it can be seen that the head section 16 of the slide 12 extends radially into the receiving space 5 of the magazine housing 2, such that the driver element 13 can be controlled via the magazine feeder, and the head section 16 of the slide 12 then acts axially on the bolt stop lever of the self-loading firearm via the tongue 16.1.

[0045] The following is based on the Fig. 6 the function of the slide 12 and its interaction with a slide stop lever 30 of the self-loading firearm is explained in more detail. In the view according to Fig. 6 shows only a detailed area of ​​the firearm, in which the magazine well 1 is located. The firing direction of the firearm is to the right in the drawing, i.e., the magazine well 1 is seen from the right side as viewed in the firing direction. Above the magazine well 1, one can partially see into the interior of the housing through the ejection port of the firearm, with part of the interchangeable insert 3 visible from the inside. There one can see the upper end of the slide 12, which, after the last cartridge has been fired, can be axially acted upon by a magazine feeder via the driver element 13 (not shown). The slide stop lever 30 is moved axially upwards via the tongue 16.1 formed on the head section 16, which in this case is arranged directly below the slide stop lever 30, into a position that locks the bolt 31 of the self-loading firearm.Such a design thus allows the use of slide stop levers 30 without a lug. The slide 31 thus remains in an open position, as shown in FIG. Fig. 6 is shown. List of reference symbols 1 magazine slot 2 magazine housings 3 interchangeable inserts 4 recess 5 Recording room 6 shaft section 7 connecting section 8 Wall / outer contour 9 Wall section 10 Wall / outer contour 11 Bead / Jetfunnel 12 sliders 13 Driving element 14 Main section 15 wing elements 16 Head section 16.1 Tongue 17 first distal end section 18 first leg section 19 second leg section 20 second distal end section 21 Guide channel 22 recesses 23 first stop surface 24 spring element 25 second stop surface 26.1 Lead 26.2 Connecting element 27.1 Lead 27.2 Connecting element 28.1 Lead 28.2 Connecting element 29.1 Fastening element 29.2 Abutment 30 slide stop lever 31 Closure

Claims

[1] Magazine well (1) for a self-loading firearm, comprising a magazine housing (2) which is provided with a recess (4) on its circumference and has an axially extending receiving space (5) for a magazine of the self-loading firearm, and a replaceable insert (3) which can be inserted into the recess (4) of the magazine housing (2), wherein the replaceable insert (3) comprises a pre-tensioned slide (12) which is displaceably mounted in the replaceable insert (3) and via which a bolt catch lever (30) of the self-loading firearm can be axially acted upon. [2] Magazine shaft (1) according to claim 1, wherein the slide (12) has at its first distal end portion (17) a driver element (13) via which the slide (12) can be axially acted upon by a feeder of a magazine, such that the slide (12) then axially acts upon the slide catch lever (30) of the self-loading firearm, preferably via a tongue (16.1) formed on the end portion (17). [3] Magazine shaft (1) according to claim 2, wherein the slide (12) comprises an axially extending main section (14) with a first end facing the driver element (13) and a second end arranged axially opposite, wherein the main section (14) is displaceably mounted in a guide channel (21) of the interchangeable insert (3) at least over part of its length. [4] Magazine shaft (1) according to claim 3, wherein the slide (12) has a plurality of wing elements (15) arranged on its main section (14), which preferably extend perpendicularly from the main section (14), in particular from its longitudinal sides. [5] Magazine shaft (1) according to claim 3 or 4, wherein the slide (12) comprises at the first axial end of the main portion (14) an axially extending head portion (16) which is radially offset from the main portion (14) and from which the driver element (13) extends perpendicularly. [6] Magazine shaft (1) according to one of the preceding claims, wherein the slide (12) is pretensioned via a spring element (24) which is preferably arranged on the interchangeable insert (3) and engages a second distal end portion (20) of the slide (12). [7] Magazine shaft (1) according to one of the preceding claims 3 to 6, wherein the slide (12) has a first leg portion (18) extending perpendicularly from the second axial end of the main portion (14), wherein the first leg portion (18) is preferably arranged in the same spatial plane as the main portion (14). [8] Magazine shaft (1) according to claim 7, wherein the second distal end portion (20) of the slider (12) is formed by a second leg portion (19) which extends as an angled extension from the first leg portion (18). [9] Magazine shaft (1) according to one of the preceding claims, wherein the interchangeable insert (3) has on its inner side facing the receiving space (5) a first stop surface (23) against which the slide (12) rests in its axial basic position. [10] Magazine shaft (1) according to claim 9, wherein the interchangeable insert (3) has a second stop surface (25) on its inner side facing the receiving space (5), by means of which the slide (12) is limited in its axial movement. [11] Magazine shaft (1) according to claims 7 and 10, wherein the two stop surfaces (23, 25) are designed to correspond to the two longitudinal sides of the first leg section (18). [12] Magazine shaft (1) according to one of the preceding claims, wherein the magazine housing (2) has at least one projection (26.1, 27.1, 28.1) in the region of the recess (4), which, in the inserted state, forms a plug connection with at least one hook-like connecting element (26.2, 27.2, 28.2) arranged on the inside of the interchangeable insert (3). [13] Magazine shaft (1) according to one of the preceding claims, wherein it has at least one radially inwardly offset wall section (9) in the region of the recess (4). [14] Magazine shaft (1) according to claim 13, wherein the recess (4) of the magazine housing (2) and the interchangeable insert (3) are designed such that, when the interchangeable insert (3) is inserted, a cavity is formed between the wall section (9) and the inside of the interchangeable insert (3), which cavity at least partially accommodates the slider (12). [15] Magazine shaft (1) according to claims 12 and 13 or according to claims 12 and 14, wherein the wall section (9) forms a plug connection with at least one further hook-like connecting element (26.2) arranged on the inside of the interchangeable insert (3) in the inserted state. [16] Magazine shaft (1) according to one of the preceding claims, wherein the magazine housing (2) has at least one fastening element (29.1) in the region of the recess (4), via which the interchangeable insert (3) can be non-positively connected to the magazine housing (2). [17] Self-loading firearm, preferably a semi-automatic long or short shot weapon comprising a magazine well (1) according to one of the preceding claims. [18] Self-loading firearm according to claim 17, wherein it has no nose on its slide catch lever (30). [19] Interchangeable insert (3) for use in a magazine well (1) for a self-loading firearm, wherein the magazine well (1) has a magazine housing (2) which is provided on its circumference with a recess (4) for the interchangeable insert (3) and has an axially extending receiving space (5) for a magazine of the self-loading firearm, wherein the interchangeable insert (3) comprises a pre-tensioned slide (12) which is displaceably mounted in the interchangeable insert (3) and via which a bolt catch lever (30) of the self-loading firearm can be axially acted upon.

20. System comprising an interchangeable insert (3) according to claim 19 and an adapter ring, the outer dimensions of which are adapted to the inner dimensions of the magazine shaft (1), in particular to its axial receiving space (5), wherein the interchangeable insert (3) and the adapter ring are colored in the same color.

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