Loadable Fixed Magazine Conversion Kit for Firearms
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Solution Overview
Problem
There is a need for solutions to bring non-compliant sporting rifles into compliance with laws requiring fixed magazines that hold no more than 10 rounds, particularly in states like California, where semi-automatic rifles with detachable magazines are banned.
Innovation Solution
A loadable fixed ammunition magazine with a housing that includes a follower assembly, a slidable cover, and a locking assembly designed for secure attachment to various firearm receivers, limiting the magazine capacity to 10 rounds and preventing removal without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable magazine is used in a firearm, then the ease of operation is improved (magazine can be quickly removed and replaced), but the firearm becomes non-compliant with California law which requires fixed magazines
Solution Approach 1:
The magazine system transitions from a permanently fixed state to a temporarily removable state through a conversion kit that can be installed or removed. The conversion kit includes components that mechanically attach the magazine to the receiver, creating a fixed appearance and function when installed, but can be completely removed to restore detachable functionality.
2Reliability
If a fixed magazine is installed to comply with California law, then legal compliance is improved, but the ease of operation deteriorates (magazine cannot be removed without disassembly)
Solution Approach 1:
The conversion kit is divided into separate components including a retention mechanism, locking components, and attachment elements that can be individually installed or removed. This segmentation allows the magazine system to switch between fixed and detachable states without requiring complete disassembly of the firearm, maintaining ease of operation while achieving legal compliance.
3Reliability
If the magazine capacity is limited to 10 rounds to comply with California law, then legal compliance is improved, but the productivity deteriorates (fewer rounds available before reloading)
Solution Approach 1:
The conversion kit is designed to work with standard-capacity magazines while providing the option to use extended capacity magazines that comply with California's 10-round limit. The retention mechanism and locking components are engineered to accommodate various magazine sizes and capacities, allowing users to optimize between compliance and productivity based on their specific needs and legal requirements.
4Ease of manufacture
If a conversion kit is used to make a firearm compliant with California law, then the cost is reduced compared to buying a new firearm, but the device complexity increases (additional components required)
Solution Approach 1:
The conversion kit components are designed to integrate with the existing firearm structure, combining multiple functions into unified elements. The retention mechanism, locking components, and attachment elements work together as a coordinated system that leverages the firearm's existing geometry and mounting points, reducing the total number of separate parts needed and simplifying the overall conversion process.
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 solution provides a compliant and functional fixed magazine system for firearms, ensuring that the magazine capacity is limited to 10 rounds and securely attached to the firearm, meeting regulatory requirements while allowing for easy loading and use.
Implementation Method 1
The spring is configured to be compressed by the follower when the finger-pull is compressed by the follower when the finger-pull is engaged with the bottom hook, and configured to expand when the finger-pull is disengaged from the bottom hook, thereby allowing the follower to urge the stack of cartridges towards the moth of the ammunition magazine.
Data Source
AI summary
A loadable ammunition magazine for use with a sporting firearm includes a housing defining a cartridge-loading compartment and a follower compartment, a cover that alternately covers and reveals the cartridge-loading compartment, and a follower that urges cartridges in the cartridge-loading compartment towards a mouth of the magazine. A locking assembly prevents the magazine from being detached from the lower receiver of the firearm without disassembly of the firearm action designed for use with AK-47-style rifles having stamped receivers, the locking assembly comprises a locking bar including a horizontal lower flange that is secured by a threaded fastener to the top wall of the magazine housing and a horizontal upper flange that rests on the cross rivet of the receiver. In another embodiment, designed for use with AK-47-style rifles having machined receivers, the locking assembly comprises a locking bar including a horizontal upper flange that is secured by a threaded fastener to the top wall of the magazine housing and a horizontal lower flange that rests on the bottom wall of the receiver.