Modular Firearm Receiver Base with Threaded Annulus
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Solution Overview
Problem
The AR-15 platform modifications that render the buffer tube non-functional have opened opportunities for further modifications, but existing solutions lack a modular system to effectively utilize the space previously occupied by the buffer tube, limiting configuration options for firearm receivers.
Innovation Solution
A modular system for a firearm receiver featuring a base with a helically threaded exterior that engages with the receiver's annulus, along with various end caps and an endplate, allowing for quick reconfiguration and accessory attachment through Picatinny rails and QD adapters, enabling multiple configurations without the need for a buffer tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the buffer tube is removed to enable modifications, then adaptability and versatility are improved, but the structural stability and functionality are worsened
Solution Approach 1:
The system divides the buffer tube replacement space into modular components: a base that threads onto the receiver and multiple interchangeable end caps. Each end cap can be independently attached or removed, allowing users to segment and reconfigure the system based on desired functionality or aesthetic preferences while maintaining structural integrity through the threaded base connection.
Solution Approach 2:
The base component serves multiple functions: it provides the threaded connection to the receiver, supports various end cap configurations, and maintains the structural space where the buffer tube previously existed. The end caps themselves can feature different accessories such as Picatinny rails or QD adapters, making each component multi-functional and adaptable to different operational needs.
2Ease of operation
If a modular system is implemented without a buffer tube, then ease of operation and customization are improved, but device complexity increases
Solution Approach 1:
The system transitions from a static buffer tube configuration to a dynamic, reconfigurable assembly. The end caps can be easily attached and detached from the base using simple threading or quick-detach mechanisms, allowing the user to dynamically change the configuration of the receiver end based on operational requirements or personal preference without complex tools or procedures.
Data Source
AI summary
A modular system for a firearm receiver which has a threaded annulus at a rear end thereof. The modular system includes a base that includes a front face, a rear face, and a thread helically extending along an exterior thereof between the front face and rear face and configured to engage with the threaded annulus of the receiver. The base includes a screw opening extending through the front and rear faces. The system also includes a screw and a first end cap. The first end cap has a body. The body has a front face and a threaded opening extending into the body and terminating therein. The screw has a threaded shank configured to extend through the screw opening of the base and into the threaded opening of the first end cap for connecting the base and first end cap.