Reversible Barrel Support Insert for Firearm Stock Adaptability
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Solution Overview
Problem
Firearm stocks are typically designed to support either tapered or bull barrels, requiring a new stock when switching between barrel types, and existing solutions face issues with storage and tracking of inserts for bull barrels.
Innovation Solution
A selectable barrel support system with elongate frames and concave barrel recesses on opposite sides, allowing for the reversible attachment of different barrel types without changing the stock, including features for secure snap or friction fit and optional fasteners, and angled faces to assist trigger assembly insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stock is designed to support only one barrel type (tapered or bull), then the structural design is simple and reliable, but the adaptability is poor requiring a new stock when switching barrel types
Solution Approach 1:
The stock is divided into two functional components: a main stock body and a removable barrel support insert. The insert contains the barrel recess and can be exchanged between tapered and bull barrel configurations, while the main stock body remains unchanged. This segmentation allows the stock to support multiple barrel types without redesigning the entire stock structure.
Solution Approach 2:
The main stock body is designed with a universal recess accommodation capability that can receive both tapered and bull barrel support inserts. The elongate frame structure with opposing concave recesses allows a single stock to universally support different barrel types through insert replacement, making the stock multi-functional.
2Adaptability or versatility
If a removable insert is added to enable barrel type switching, then the adaptability improves, but the ease of operation deteriorates due to needing to store and track the insert
Solution Approach 1:
The tapered barrel support and bull barrel support are merged into a single elongate frame structure with opposing concave recesses. Both barrel support configurations are integrated into one component that can be inserted into the stock, eliminating the need to manage separate inserts for different barrel types.
3Ease of operation
If the trigger guard opening is designed to accommodate safety pin clearance, then the ease of operation improves, but the reliability deteriorates when the safety pin is not centered
Solution Approach 1:
The trigger guard opening is designed with asymmetric angled faces that are not symmetrical about the centerline. These angled faces create a self-centering mechanism that guides the trigger assembly into the correct position during insertion, ensuring the safety pin clears the opening properly without requiring precise manual alignment by the operator.
Data Source
AI summary
This disclosure describes systems, methods, and apparatus for a selectable barrel support that can be inserted into a forend of a firearm stock to support a first barrel type and flipped, rotated, or otherwise moved to support a second barrel type (or third or fourth barrel types). Bull and tapered barrels are examples of two barrel types that the selectable barrel support can be used to support. The selectable barrel support enables a firearm owner or gunsmith to exchange barrel types on a firearm without having to switch out the firearm stock.