Firearm Magazine Conversion Device with Receiver-Linked Catch
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Solution Overview
Problem
Semi-automatic firearms with detachable magazines are facing increased regulation and restriction, necessitating a method to convert them into firearms with fixed magazines to comply with impending legislation.
Innovation Solution
A device and method that integrates a magazine catch system, where the magazine can only be released when the upper receiver is removed from the lower receiver, effectively converting a semi-automatic rifle with a detachable magazine into one with a fixed magazine, preventing the use of detachable magazines and allowing only fixed magazines of up to 10 rounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable magazine is used in a semi-automatic rifle, then the ease of operation is improved (quick magazine changes), but the regulatory compliance deteriorates (subject to assault weapon bans)
Solution Approach 1:
The magazine release mechanism is made conditional rather than static. The catch bar can release the magazine only when the upper receiver is removed from the lower receiver, creating a dynamic system that adapts its functionality based on the assembly state of the firearm components.
Solution Approach 2:
The firearm is divided into separable components (upper receiver and lower receiver) with the magazine release function tied to their relative positions. This segmentation allows the system to exhibit different behaviors when assembled versus disassembled, enabling regulatory compliance while maintaining operational flexibility.
2Ease of operation
If a magazine release mechanism is provided, then the ease of operation is improved (quick magazine changes), but the magazine stability deteriorates (magazine can be accidentally released)
Solution Approach 1:
The release mechanism transitions from a continuously active state to a conditionally active state. The catch bar is held in a locked position during normal operation and only becomes capable of releasing the magazine when the upper receiver is removed, preventing accidental releases while enabling intentional changes.
Solution Approach 2:
The system preemptively prevents unwanted magazine releases by requiring a specific preliminary action (removal of the upper receiver) before the release function can be activated. This counter-measure ensures that magazine changes only occur when deliberately intended by the operator.
3Reliability
If the magazine is made fixed to comply with regulations, then the regulatory compliance is improved, but the productivity deteriorates (slower rate of fire due to disassembly requirement)
Solution Approach 1:
The system dynamically adjusts the magazine replacement process based on operational context. During sustained fire, the magazine remains fixed to ensure compliance. When magazine depletion occurs, the operator performs a quick disassembly action to replace the magazine, then reassembles, maintaining both compliance and operational effectiveness.
Solution Approach 2:
The design prepares the system for compliant operation by default (fixed magazine during assembly), eliminating the need for complex control mechanisms during firing. The preliminary configuration ensures regulatory compliance is automatically maintained while allowing efficient magazine changes when needed.
Data Source
AI summary
An accessory which becomes an integral part of a semi-automatic firearm whereby the firearm is converted from one with a detachable magazine into one with a fixed magazine. The device is comprised of an upper tension bar and a magazine catch bar whereby the upper tension bar holds the magazine firmly within the magazine well receiver when the upper tension bar is contacting the upper receiver. When the upper receiver and lower receiver of the firearm are in an open position, the upper tension bar freely moves inward toward the firearm, allowing the magazine catch bar to remove from the magazine well receiver. A user may then remove the magazine from the magazine well receiver and replace it with a new magazine. The user must reattach the upper receiver to the lower receiver before utilizing the firearm.