Adjustable Firearm Stock With Bottom-Actuated Position Selector
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Solution Overview
Problem
Current adjustable firearm stocks often suffer from slop and interference with sighting optics, and existing adjustment mechanisms can be difficult to manipulate while shouldering a firearm, failing to provide a snug fit for the user's body and shooting stance.
Innovation Solution
An adjustable stock design featuring a fixed body attached to the firearm with a slideably connected moveable body, incorporating a position selector and position retention device for precise adjustment, allowing the stock to be securely fitted to the user's body, with features like a cheek piece, butt pad, and quick detach mount for improved ergonomics and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If adjustable firearm stocks are designed to fit user's body and shooting stance, then the fit and comfort are improved, but the adjustment mechanisms become difficult to manipulate while shouldering the firearm
Solution Approach 1:
The adjustment mechanism is inverted by placing the selector on the bottom side of the stock rather than the top. This allows the user to manipulate the adjustment device with their non-shooting hand from below while the firearm is shouldered, reversing the conventional approach and solving the accessibility problem.
Solution Approach 2:
A bottom-side selector and retention device system is introduced as an intermediary mechanism between the user's hand and the stock's adjustment function. This mediator allows indirect adjustment from the bottom side, enabling easy manipulation without requiring direct access to traditional top-side adjustment mechanisms.
2Adaptability or versatility
If adjustable firearm stocks are designed with adjustment mechanisms, then the adaptability is improved, but slop and interference with sighting optics occur
Solution Approach 1:
The adjustment mechanism is extracted from the traditional location near the sight interface and relocated to the bottom side of the stock. This separation removes the potential source of slop and interference from the sighting optics path while preserving the adjustment functionality.
Solution Approach 2:
The stock is segmented into a fixed body and a moveable body that can be independently adjusted. This segmentation allows the sighting portion to remain stable and fixed while the buttstock portion is adjustable, eliminating interference between adjustment mechanisms and optics.
3Device complexity
If a single point of fixation is used between fixed body and moveable body, then the device complexity is reduced, but the stability and precision of adjustment are insufficient
Solution Approach 1:
The fixation system is segmented into two distinct functional components: a position selector for primary adjustment and a position retention device for secondary stabilization. This segmentation provides dual-point fixation that enhances stability while maintaining manageable complexity through functional differentiation.
Data Source
AI summary
An adjustable stock for a firearm having a first side, a second side, and a bottom side. The stock includes a fixed body attachable to the firearm and a moveable body slideably connected to the fixed body. The second body includes a butt of the stock. A position selector is disposed to selectively fix the relative position of the moveable body to the fixed body. The position selector is disposed on one of a first side and a bottom side. A position retention device provides a second point of selective fixation between the fixed body and the moveable body. The position retention device is disposed on one of a first side and a bottom side.