Quick Take-Down Firearm With Sliding Lock Collar
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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 incompatible with standard MILSPEC accessories.
Innovation Solution
A quick-take down coupling system 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 by sliding the lock collar between locked and unlocked positions, ensuring compatibility with standard accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
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 employs a dynamic locking mechanism where locking elements can transition between engaged and disengaged states. The locking elements are spring-loaded to automatically engage when the barrel is inserted, and can be quickly released by actuating the release mechanism, enabling tool-less disassembly and reassembly while maintaining connection strength during operation.
Solution Approach 2:
The coupling system incorporates self-aligning and self-locking features. The barrel and receiver have complementary geometric features that guide proper alignment during insertion, and the spring-loaded locking elements automatically engage with the barrel's locking surfaces without requiring external tools or manual intervention, making the assembly process self-service.
2Ease of operation
If tool-less disassembly systems are used, then ease of operation improves, but the systems are not robust and are complicated to use
Solution Approach 1:
The coupling system merges multiple functions into a single integrated mechanism. The locking elements serve both as connection devices and as alignment guides, the spring mechanism provides both the locking force and the release mechanism, and the geometric features simultaneously guide assembly and maintain connection integrity, achieving both ease of operation and robustness.
Solution Approach 2:
The coupling system employs curved and rounded geometric features including cam surfaces, rounded locking elements, and curved guide surfaces. These curved features enable smooth transition during engagement and disengagement, reduce stress concentrations, and provide mechanical advantage for the release mechanism, making the system both robust and easy to operate.
3Productivity
If quick-release mechanisms are implemented, then productivity improves, but compatibility with standard accessories may be compromised
Solution Approach 1:
The coupling system is designed with universal compatibility features. The receiver coupling and barrel coupling use standardized interfaces that can accommodate various barrel types and accessory configurations. The quick-release mechanism itself serves multiple functions: securing the barrel, providing alignment, and serving as a mounting interface for accessories, thereby maintaining versatility while enabling rapid barrel replacement.
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
Enables quick and easy disassembly and reassembly of the rifle barrel from the upper receiver without specialized tools, while maintaining compatibility with standard MILSPEC accessories and handguards.
Implementation Method 1
a resilient element, such as a spring, acting against a shoulder of the body and a shoulder of the collar to bias the locking elements towards the locked position
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.