Modular Firearm Magazine Plug for Capacity Regulation
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Solution Overview
Problem
Firearm magazine regulations vary widely, requiring a solution to adjust the storage capacity of high-capacity rifle magazines to comply with legal limits without the need for multiple magazines, while allowing unrestricted use when regulations are not applicable.
Innovation Solution
The development of a plug system that can be inserted into the magazine to limit the movement of the cartridge follower plate, restricting the storage capacity, which can be adjusted in length or configuration to meet specific legal requirements, and can be permanently or semi-permanently attached to the base or follower plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high-capacity magazine is used to increase cartridge storage, then the magazine capacity is improved, but compliance with legal restrictions on cartridge limits becomes problematic
Solution Approach 1:
The magazine system is segmented into modular components: a high-capacity magazine body and detachable plug devices. The plugs can be removed and reattached to transform the magazine between high-capacity and restricted-capacity configurations, allowing adaptation to different legal requirements while maintaining the underlying high-capacity storage capability.
Solution Approach 2:
The magazine capacity is made dynamic rather than fixed. By allowing the plug to be detached and reattached, the system can change its effective capacity on demand. This dynamic transformation enables the same physical magazine to legally adapt to different jurisdictions' requirements without sacrificing the high-capacity capability when permitted.
2Adaptability or versatility
If multiple magazines of different capacities are purchased to comply with regulations, then compliance flexibility is improved, but device complexity and cost increase
Solution Approach 1:
A single high-capacity magazine is designed to perform multiple functions: it can operate as a restricted-capacity magazine when the plug is attached, and as an unrestricted high-capacity magazine when the plug is removed. This multi-functionality eliminates the need to maintain separate magazines for different legal environments, reducing overall system complexity and cost.
Solution Approach 2:
The capacity-restriction function is extracted as a separate detachable plug component rather than being integral to the magazine body. This allows the restriction mechanism to be removed when not needed, transforming the magazine from a restricted to an unrestricted configuration. The extraction principle enables one magazine to replace multiple fixed-capacity magazines.
3Reliability
If a plug is permanently attached to reduce magazine capacity, then compliance with restrictions is improved, but the ability to use full capacity when permitted is lost
Solution Approach 1:
The plug attachment is designed to be semi-permanent or removable rather than permanently fixed. This dynamic attachment allows the user to reliably comply with restrictions when the plug is attached, while also enabling easy removal to restore full capacity when legal restrictions do not apply. The same plug-and-hole mechanism provides both reliable restriction and flexible adaptability.
Solution Approach 2:
The restriction is applied locally through a small plug component rather than modifying the entire magazine structure. This localized approach allows the restriction to be easily added or removed without affecting the overall magazine integrity or requiring permanent structural changes. The local modification can be applied only when and where needed.
Data Source
AI summary
A modular firearm magazine assembly that is adapted to accept a “plug” piece to restrict and reduce the number of cartridges that can be contained in a magazine housing. The assembly in one construction is comprised of a base plate retainer collar, base plate, resistance spring, and cartridge follower plate that attach to and mount inside a cartridge magazine housing. In alternative constructions, the base plate and cartridge follower plates are modified to provide plug pieces that cooperate to restrict and limit the maximum possible travel distance of the cartridge follower plate to reduce the cartridge storage capacity of the magazine and accommodate governmental regulations.