Magazine Locking Assembly for Firearm Disassembly Requirement
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Solution Overview
Problem
The Sa vzor 58 rifles and pistols, despite modifications like magazine blocks, can still have their magazines removed without disassembling the firearm action, violating certain state laws defining detachable magazines as 'assault weapons'.
Innovation Solution
A magazine locking assembly is configured to prevent magazine removal without disassembling the firearm, featuring a magazine block secured to the receiver, a safety pin with a concealed head, and a detent pin system that requires substantial disassembly to access and remove the magazine, ensuring the magazine remains attached until the rifle is fully disassembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magazine block assembly is used to prevent magazine removal, then the magazine cannot be detached without removing the block assembly, but the safety pin can still be accessed and manipulated to remove the magazine without disassembling the firearm action
Solution Approach 1:
The locking mechanism is divided into separate functional components: a magazine block assembly that prevents magazine removal, and a safety pin system with a concealed head that requires access through the bolt carrier assembly. This segmentation allows each component to perform its specific function while collectively achieving the goal of requiring substantial disassembly for magazine removal.
Solution Approach 2:
The safety pin head is concealed within the bolt carrier assembly, creating a nested structure where one component hides another. The safety pin is inserted through the magazine block assembly and secured by the concealed safety pin head, which can only be accessed by disassembling the bolt carrier assembly. This nesting prevents easy access to the safety pin for magazine removal.
2Reliability
If the safety pin head is concealed to prevent access, then magazine removal requires substantial disassembly, but the concealed mechanism becomes harder to detect and verify
Solution Approach 1:
The bolt carrier assembly serves as an intermediary structure that conceals the safety pin head while still allowing the safety pin to function. The safety pin passes through the magazine block assembly and is secured by the concealed safety pin head within the bolt carrier assembly. This intermediary structure provides both the locking function and a degree of visibility through the external safety pin.
3Reliability
If the safety pin cover is added to conceal the safety pin head, then the locking mechanism becomes more secure, but the device complexity and number of parts increases
Solution Approach 1:
The safety pin cover is merged with the bolt carrier assembly, where the safety pin head is concealed within the bolt carrier assembly itself. This merging eliminates the need for a separate safety pin cover component, reducing the total number of parts while still achieving the concealment function. The bolt carrier assembly simultaneously serves as both a structural component and a concealment mechanism.
Data Source
AI summary
A magazine locking assembly is provided for preventing removal of a magazine from a firearm having a receiver, a magazine, and a bolt carrier assembly a without disassembly of the firearm. The locking assembly includes a magazine block assembly secured adjacent the magazine well of the firearm, a magazine safety pin for securing the magazine block assembly adjacent the magazine well of the firearm, a safety pin cover movably attached to the firearm adjacent the bolt carrier assembly for concealing the safety pin head of the magazine safety pin, and a cover detent pin configured to engage the safety pin cover passageway to prevent the safety pin cover from moving. When the magazine locking assembly and firearm are in an assembled configuration the safety pin cover conceals the safety pin head of the magazine safety pin and the bolt carrier assembly conceals the cover detent pin.