Universally Adjustable Firearm Stock with Offset Cast
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Solution Overview
Problem
Current firearm stocks lack a universal solution for comprehensive adjustability, requiring additional parts like shims and not allowing for independent adjustments of comb height, angular cast, length of pull, and butt pad height without permanent alterations.
Innovation Solution
A universally adjustable firearm stock with a receiver-specific adapter, adjustable comb, angular cast, length of pull, and butt pad height, utilizing interchangeable cast pieces and rods for secure and customizable fit without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional firearm stocks are used without adjustment mechanisms, then the device complexity is reduced, but the adaptability to different users and firearm configurations is poor
Solution Approach 1:
The stock assembly is designed with multiple adjustment capabilities (comb height, cast angle, length of pull, butt pad height) integrated into a single universal system that can accommodate different firearm receivers and user preferences, eliminating the need for multiple specialized stocks
Solution Approach 2:
The stock is divided into multiple independently adjustable components including the comb, cast piece, rods for length of pull, and butt pad, each capable of being adjusted separately to achieve precise customization without affecting other parameters
2Adaptability or versatility
If multiple adjustment mechanisms are integrated into a single stock, then the adaptability improves, but the device complexity increases
Solution Approach 1:
Multiple adjustment functions (comb height adjustment, cast angle adjustment via offset holes, length of pull via extendable rods, and butt pad height adjustment) are merged into a single integrated stock assembly, reducing the need for separate adjustment devices or additional parts like shims and risers
3Reliability
If adjustable features are made permanent, then the reliability of adjustments is improved, but the ease of operation for re-adjustment deteriorates
Solution Approach 1:
The stock features dynamically adjustable components that can be easily repositioned and reconfigured by the user without permanent alterations, allowing adjustments to be changed as needed while maintaining stable positioning when locked into place
4Manufacturing precision
If additional parts like shims and risers are used for adjustments, then the manufacturing precision of individual components can be maintained, but the device complexity and quantity of parts increases
Solution Approach 1:
The stock assembly integrates multiple adjustment functions directly into the main components, eliminating the need for separate shims, risers, or additional parts. The cast piece with offset holes, extendable rods, and adjustable comb provide precise adjustments without requiring external accessories
Data Source
AI summary
A universally adjustable firearm stock is provided having adjustments for comb, cast, length of pull and butt pad height. The stock has an adapter (receiver model specific) to connect a frame to the receiver. An end of a mount passes through a slot through a frame seat. A cast piece is received within the seat and has a cast hole (center hole—no cast, offset hole—cast). The rearward extending end of the mount passes through the cast hole, wherein any offset in the cast hole results in an angular cast. The comb is vertically adjustable relative to the frame. Two rods are extendable relative to the frame to adjust the length of pull. A butt plate has two slots wherein the height of a butt pad relative to the rods is adjustable.