Firearm Magazine Extension Locking Pin Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing magazine extensions for firearms lack a robust and secure locking mechanism that prevents dislodgment during operation or accidental removal, and they often interfere with the internal workings of the magazine or require tools for installation and removal.
Innovation Solution
A magazine extension design featuring a baseplate with a laterally extending through-bore and a side bracket with a corresponding through-bore, secured by a locking pin with a diameter transition and stopping surface, allowing for toolless assembly and disassembly while ensuring secure attachment to the magazine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to prevent dislodgment, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is segmented into modular components: a locking pin with diameter transition, stopping surfaces, and alignment features. This segmentation allows each component to perform a specific function while maintaining overall simplicity and reliability of the assembly.
2Reliability
If a robust locking mechanism is implemented, then reliability is improved, but ease of operation deteriorates due to tool requirements
Solution Approach 1:
The locking pin is designed with self-aligning features including diameter transitions and stopping surfaces that guide the pin into the correct position automatically. The engagement geometry provides self-centering action, allowing users to assemble and disassemble the mechanism without specialized tools, while maintaining secure attachment during operation.
3Reliability
If the locking mechanism components are added, then reliability is improved, but interference with internal magazine workings increases
Solution Approach 1:
The locking mechanism is extracted as a separate, self-contained assembly that attaches to the exterior of the magazine body. The locking pin engages with external features of the magazine without penetrating into or interfering with the internal magazine workings, including the spring and follower mechanisms.
Data Source
AI summary
A magazine extension is provided. The magazine extension includes a baseplate structured to receive a lower open end of a magazine, the baseplate having a laterally extending through-bore; a side bracket structured to couple to the baseplate for securing the magazine, the side bracket having a laterally extending through-bore; and a locking pin insertable within both the through-bore of the baseplate and the through-bore of the side bracket to lock the side bracket to the baseplate.