AR-15 Magazine Locking Device for Legal Compliance
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Solution Overview
Problem
Existing firearm retention devices for AR-15 style rifles are cumbersome and do not fit all variants, requiring manual button depression to release magazines, which is inefficient and non-compliant with regulations that mandate disassembly of the firearm action before magazine removal.
Innovation Solution
A device comprising a plug, block fastener, oval block, catch pin, anchor pin, anchor, main body, main body spring, catch, catch spring, and catch fastener that automatically releases the magazine when the upper and lower receivers are separated, ensuring compliance with laws by locking the magazine until the firearm is disassembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magazine catch is used to retain the magazine in an AR-15 style rifle, then the magazine can be easily installed and removed by depressing a button, but this does not comply with laws that require disassembly of the firearm action before magazine removal
Solution Approach 1:
The patent introduces an intermediary device - a block with an arresting face that mediates between the magazine catch mechanism and the upper receiver. This block physically prevents magazine removal unless the upper receiver is separated from the lower receiver, thereby enforcing legal compliance while maintaining ease of operation when properly disassembled.
Solution Approach 2:
The invention adds a spatial dimension to the magazine retention system by positioning the block between the upper and lower receivers. The arresting face of the block extends into the path of magazine removal, creating a physical barrier that operates in a different spatial plane than traditional magazine catches.
2Reliability
If existing retention devices are designed to restrict magazine removal, then legal compliance is achieved, but these devices are cumbersome and do not fit all variants of AR-15 style rifles
Solution Approach 1:
The block design serves multiple functions: it acts as a physical barrier to prevent magazine removal, provides an arresting face for the upper receiver, and can be installed on various AR-15 variants. The universal lower receiver attachment method allows the same block design to work across different rifle configurations, enhancing adaptability while maintaining legal compliance.
3Strength
If manual button depression is required to release the magazine, then the magazine can be retained securely, but this process is inefficient and requires additional user action beyond simple magazine well separation
Solution Approach 1:
The block is pre-positioned between the upper and lower receivers with its arresting face oriented to intercept magazine removal attempts. This preliminary positioning means that when the upper receiver is separated from the lower receiver, the magazine is automatically released without requiring additional user actions such as button depression, thereby improving release efficiency while maintaining secure retention when assembled.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides an efficient and compliant method for magazine release, automatically freeing the magazine when the firearm action is disassembled, fitting various AR-15 style rifle configurations without the need for manual button depression, enhancing user compliance with legal requirements.
Implementation Method 1
The main body is then attached to the anchor with an anchor pin. The main body pivots about the anchor pin and is sprung by means of a main body spring, which is retained in the main body spring cavity. The main body moves toward or away from the center mass of the weapon when the upper half of the weapon is moved away from the arresting face.
Implementation Method 2
The catch pivots about the catch pin, being held in sprung position by the catch spring and catch fastener.
Data Source
AI summary
Broadly, the present embodiment is a magazine locking device. The present embodiment locks a magazine in the magazine well when an AR-15 style rifle's upper and lower receivers are closed together. When an AR-15 style rifle's upper and lower receivers are closed, the present embodiment will allow a magazine to be inserted into the firearm. When a magazine is fully inserted into the magazine well the magazine is fixed in place. In order to release the fixed magazine that is retained in an AR-15 style rifle magazine well by the present embodiment, the upper and lower receivers of an AR-15 style rifle must be opened, or separated. The instant the upper and lower receivers of an AR-15 style rifle are separated the fixed magazine is automatically released. The present embodiment is returned to the closed position when an AR-15 style upper receiver is closed onto the lower receiver.