Ambidextrous Lower Receiver Bolt Catch Inversion
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Solution Overview
Problem
Current firearms with spring-loaded magazines often experience jams during rapid firing, requiring complex and time-consuming procedures to clear, which can leave the operator defenseless and compromise control, especially in combat situations.
Innovation Solution
An ambidextrous lower receiver design for automatic rifles that allows for intuitive and safe manipulation of the bolt catch from either side, reducing the steps needed to clear jams by automatically switching between engaging and disengaging the bolt catch, thereby enhancing operational speed and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the standard jam clearance procedure is used, then the jam can be cleared, but the operator must remove the right hand from the firing grip twice, slowing down the process and compromising safety and control
Solution Approach 1:
The bolt catch is positioned and configured to be accessible from the left side of the firearm instead of the traditional right side. This inversion allows the operator to clear jams by accessing the bolt catch from the non-dominant hand side, enabling one-handed operation with the dominant hand remaining on the firing grip, thus reducing clearance time while maintaining safety and control
2Ease of operation
If the standard jam clearance procedure is used, then the jam can be cleared, but the operator loses control of the firearm direction during the process
Solution Approach 1:
By inverting the bolt catch accessibility to the left side, the design allows the operator to maintain grip on the firing grip with the dominant right hand while using the left hand to operate the bolt catch. This prevents the operator from losing control of the firearm direction during jam clearance, as the dominant hand remains positioned to control the firing grip and barrel orientation throughout the procedure
3Ease of operation
If the bolt catch is positioned for right-handed operation, then it is easily accessible to right-handed operators, but left-handed operators cannot efficiently clear jams
Solution Approach 1:
The bolt catch is positioned asymmetrically on the left side of the firearm receiver, creating a dedicated access point that works optimally for left-handed operators. This asymmetric positioning, combined with the ambidextrous trigger guard design, allows both left-handed and right-handed operators to efficiently clear jams, with left-handed operators gaining primary accessibility while right-handed operators can still access it from their dominant hand side
4Reliability
If a complex multi-step jam clearance procedure is used, then all jams can be cleared effectively, but the procedure becomes time-consuming and leaves the operator defenseless during combat
Solution Approach 1:
The inverted bolt catch positioning on the left side enables a streamlined clearance procedure that reduces the number of steps required. By accessing the bolt catch from the left hand, the operator can perform the clearance sequence more efficiently without compromising effectiveness, thereby increasing clearance speed and reducing the time the operator remains defenseless during combat situations
Data Source
AI summary
An ambidextrous lower receiver for an automatic rifle is an apparatus that allows a rifle bolt of an upper receiver that is mounted on the apparatus to be manipulated from either side of the automatic rifle. The apparatus includes a lower-receiver body, a bolt catch button, a bolt catch lever, a pusher finger, and a length-adjustable pin. The lower-receiver body attaches with the upper receiver of an automatic rifle and connects a magazine and a pistol grip to the automatic rifle. The lower-receiver body positions the bolt catch button and the bolt catch lever. The bolt catch button releases and locks the bolt catch lever. The bolt catch lever releases and locks the rifle bolt of a corresponding upper receiver. The bolt catch button manipulates the bolt catch lever from the opposite side of the automatic rifle with the pusher finger and the length-adjustable pin.