Lightweight Buttstock with Collapsible Bore for Buffer Tube
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Solution Overview
Problem
There is a lack of a lightweight, non-collapsible buttstock that can be easily fitted to existing buffer tubes for firearms, as current options are either heavy or cumbersome and do not offer the desired simplicity.
Innovation Solution
A buttstock design featuring a partial hollow cylinder with dynamic and static arms that define a collapsible bore and keyway, allowing for size reduction through screw engagement, along with a quick detachable mounting point and textured nonslip surface, providing a lightweight and adaptable solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional variable position buttstock is used, then the firearm can be adjusted to different lengths, but the buttstock becomes heavy and cumbersome
Solution Approach 1:
The buttstock is divided into separate components: a buffer tube interface section, a collapsible bore section with dynamic and static arms, and a buttplate section. This segmentation allows the stock to achieve adjustability through selective assembly and disassembly of lightweight components rather than using a single heavy adjustable mechanism
Solution Approach 2:
The collapsible bore design incorporates a dynamic arm that can be flexed inward toward a static arm to collapse the bore and keyway, reducing the overall size. This dynamic collapse mechanism provides adaptability in a lightweight package by allowing the stock to transition between extended and collapsed states without requiring heavy structural support
2Ease of manufacture
If a fixed non-collapsible buttstock is used, then the structure is simplified, but it cannot be easily fitted to or removed from existing buffer tubes
Solution Approach 1:
The buttstock design incorporates a buffer tube interface with a keyway and collapse mechanism that can accommodate standard buffer tubes. The universal interface design allows the same buttstock structure to be fitted to existing buffer tubes while maintaining structural simplicity through the collapsible bore design
Solution Approach 2:
The separable design with distinct buffer tube interface, collapsible bore, and buttplate sections allows the buttstock to be easily assembled and disassembled from existing buffer tubes. This segmentation enables retrofit capability without requiring complex integration mechanisms
3Volume of moving object
If the bore and keyway are made collapsible, then the size is reduced, but the structural complexity increases
Solution Approach 1:
The collapsible bore utilizes a dynamic arm that can be flexed inward toward a static arm to collapse the bore and keyway. This dynamic design achieves size reduction through simple flexing action rather than complex mechanical linkages, maintaining relatively low structural complexity while achieving volume reduction
Solution Approach 2:
The dynamic arm functions as a flexible structural element that can be bent inward to collapse the bore. This flexible component approach achieves size reduction without requiring rigid mechanical collapse mechanisms, thereby limiting the increase in structural complexity
Data Source
AI summary
A buttstock having a buttplate that comprises a partial hollow cylinder extending from a surface of the buttplate; a static arm extending from a first portion of the partial hollow cylinder; a dynamic arm extending from a second portion of the partial hollow cylinder, wherein the static arm is separated from the dynamic arm by a compression gap, wherein the dynamic arm can be urged toward the static arm; and an at least partially threaded static arm aperture formed through said static arm and aligned with a dynamic arm aperture formed through said dynamic arm.