Multi-Axis Adjustable Rifle Stock With Locking Wedge
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Solution Overview
Problem
Existing firearm stocks lack a comprehensive solution for achieving optimal ergonomics and stiffness while allowing for adjustments to accommodate different shooter requirements and maintaining accuracy under varying conditions.
Innovation Solution
A multi-axis adjustable buttstock system with a receiver portion and forestock that includes serrated grip retainers, threaded rod for length adjustment, recoil pad adapter for slant and angle adjustments, and a locking mechanism that securely attaches the receiver portion to the forestock, allowing for compatibility with various rifle configurations and materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rifle stock uses a traditional fixed design, then manufacturing is simple and cost-effective, but it cannot accommodate different shooter requirements and provides poor ergonomics
Solution Approach 1:
The rifle stock is divided into multiple independent adjustable components including the buttstock with length of pull adjustment, comb with elevation adjustment, and cheek piece with angle adjustment. Each segment can be independently adjusted to accommodate different shooter requirements without requiring complex integrated mechanisms.
Solution Approach 2:
The stock incorporates dynamic adjustment capabilities allowing the shooter to modify the stock's geometry in the field. The adjustable length of pull, comb elevation, and cheek piece angle enable the stock to adapt to different shooting positions and shooter anatomies, transforming a static structure into a dynamically configurable system.
2Ease of operation
If the rifle stock uses multiple adjustable components, then ergonomics are improved, but the structural stiffness and bedding stability deteriorate
Solution Approach 1:
The stock employs local quality by providing rigidity and stability in the bedding areas where the receiver is mounted, while allowing adjustability in specific zones such as the length of pull, comb elevation, and cheek piece angle. This ensures that structural integrity is maintained in critical areas while ergonomics are optimized in user-interaction areas.
Solution Approach 2:
By segmenting the adjustable components from the main stock body, the patent isolates the adjustability functions to specific modules. This segmentation allows the main stock structure to maintain its stiffness and bedding stability while the modular components provide the necessary ergonomic adjustments.
3Adaptability or versatility
If the rifle stock is made highly adjustable, then shooter comfort is maximized, but the device requires more parts and becomes harder to manufacture
Solution Approach 1:
The patent divides the adjustable stock into several discrete components that can be manufactured independently using standard machining processes. Each component (buttstock, comb, cheek piece) can be produced separately and then assembled, simplifying manufacturing while providing multiple adjustment options through the combination of parts.
Solution Approach 2:
The adjustable components are designed with universal features that allow them to perform multiple functions. For example, the comb provides both structural support and elevation adjustment, while the cheek piece serves as both a structural element and an angle adjustment mechanism. This multi-functionality reduces the total number of parts needed while maintaining high adaptability.
4Ease of operation
If the rifle stock uses adjustable mechanisms, then ergonomics are improved, but the accuracy and consistency of bedding are compromised
Solution Approach 1:
The patent ensures high manufacturing precision in the bedding areas by using precise machining and fitting processes for the receiver mounting surfaces. The adjustable components are designed to maintain consistent alignment and contact with the stock body, ensuring that ergonomic adjustments do not compromise the precision of the bedding.
Solution Approach 2:
By separating the adjustable components from the main stock body, the patent allows the bedding area to be optimized for precision and stability while the modular components provide ergonomic adjustments. This segmentation ensures that the critical bedding surfaces remain stable and accurate regardless of the adjustments made to the peripheral components.
Data Source
AI summary
An improved tactical adaptive rifle stock is taught which includes a multi-axis adjustable buttstock, and a fore-end consisting of a receiver portion and a forestock, together forming a combined set, which is attached to a flanged stock bolt of the buttstock. The receiver portion includes a cavity forming a receiver bedding interface surface precluding peripheral interference. The receiver portion has a recoil lug pocket with threaded fasteners engaging a rifle action recoil lug. A locking wedge is positioned in a recess of the receiver portion and dovetail grooves are included in a forward end. The forestock incorporates dovetail grooves that mate with the receiver portion grooves when secured with a wedge and wedge threaded fastener. The buttstock, receiver portion and forestock have lightening areas for reducing overall weight. A second embodiment utilizes an adapter, a connector and an AR-15 style handguard or a suppressor, replacing the forestock and a third embodiment employs a one piece fore-end.