Quick Take-Down Firearm With Tool-Less Barrel Coupling
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Solution Overview
Problem
Existing firearms, such as AR-15, AR Pistols, and M16 rifles, require specialized tools and a workbench for disassembly and reassembly of the rifle barrel from the upper receiver, and existing tool-less systems are not robust, complicated, and do not support standard MILSPEC accessories.
Innovation Solution
A quick-take down mechanism featuring an upper receiver coupling with rotationally offset gas tube tunnels, a sliding lock collar, and a barrel coupling that allows for tool-less disassembly and reassembly, ensuring compatibility with standard accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional firearm assembly methods are used, then the connection is strong and reliable, but the disassembly and reassembly require specialized tools and a workbench
Solution Approach 1:
The coupling system is divided into separate components: an upper receiver coupling with locking elements and a barrel coupling with corresponding locking element receivers. This segmentation allows the barrel to be quickly detached from the upper receiver by releasing the locking elements, eliminating the need for specialized tools while maintaining connection reliability when locked
Solution Approach 2:
Locking elements (balls) act as intermediaries between the upper receiver coupling and barrel coupling. These locking elements engage with locking element receivers to secure the connection, and can be easily released to allow quick disassembly, serving as a mediator that provides both strong connection and easy release
2Ease of operation
If tool-less disassembly systems are used, then the ease of operation improves, but the systems are not robust and are complicated
Solution Approach 1:
The coupling system is designed to be self-servicing through the interaction of locking elements, locking element receivers, and a biasing mechanism. The spring-loaded locking elements automatically engage with the receivers when the barrel is inserted and can be released by applying pressure to the collar, providing tool-less operation without requiring external tools or complex procedures
Solution Approach 2:
The locking elements are designed to be dynamic rather than static, using a spring biasing mechanism that allows them to automatically engage and disengage. The collar can be moved to compress the spring and release the locking elements, providing a simple dynamic release mechanism that maintains robustness while enabling easy operation
3Loss of time
If quick-release mechanisms are implemented, then the disassembly time is reduced, but the compatibility with standard accessories is lost
Solution Approach 1:
The coupling system incorporates universal MILSPEC threading (11.5mm right-hand thread) on the barrel coupling that is compatible with standard handguards and accessories. The quick-release mechanism operates independently of this universal threading, allowing the system to provide both rapid disassembly capability and compatibility with standard firearm accessories through the same interface
Data Source
AI summary
Quick take-down firearms and methods of using quick-take down firearms. The quick-take down includes an upper receiver coupling and a barrel coupling. The quick take-down can be unlocked by sliding a sliding lock collar in a translational motion to an unlocked position to release locking elements from a locked configuration. In the unlocked position, a barrel and handguard may be installed onto and removed from the upper receiver of the firearm. Releasing the sliding lock collar returns it to a locked position, securing the barrel and handguard to the upper receiver.