Modular Firearm Stock Barrel Support System
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Solution Overview
Problem
Current firearm stocks are not adaptable to both tapered and bull barrels, requiring separate stocks for different barrel types, and often suffer from manufacturing tolerances leading to accuracy issues in lighter rifles.
Innovation Solution
A modular firearm stock system with a selectable barrel support that includes reversible barrel supports and a tensioning mechanism, allowing for easy switching between barrel types and fine-tuning the barrel's position to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a stock is designed to support only one barrel type (tapered or bull), then the stock can be optimized for that specific barrel type, but users must purchase and install an entirely new stock when switching barrel types
Solution Approach 1:
The stock is divided into separate functional components: a main stock body and interchangeable barrel support inserts. Each insert is specifically designed to support one barrel type (tapered or bull), allowing users to swap inserts rather than entire stocks. This segmentation enables manufacturing optimization for each insert type while providing versatility through interchangeability.
Solution Approach 2:
The main stock body is designed with a universal interface that can accommodate different barrel support inserts. The stock includes a receiver cavity and mounting structure that works with both tapered and bull barrel inserts, allowing a single stock to support multiple barrel types through the use of different inserts.
2Adaptability or versatility
If an insert is added to enable barrel type switching, then barrel type versatility is improved, but the user must store and keep track of the insert when not in use
Solution Approach 1:
The barrel support insert is designed to nest within the stock's receiver cavity when not in use. The insert can be stored inside the stock body, eliminating the need for separate storage containers or tracking systems. This nesting approach keeps the insert organized and readily accessible while reducing clutter.
3Ease of manufacture
If manufacturers produce lighter rifles with looser tolerance standards, then manufacturing cost and weight are reduced, but accuracy deteriorates due to excessive relative movement between barrel and stock
Solution Approach 1:
While the overall rifle may be manufactured with looser tolerances, the barrel support insert and its interface with the stock are manufactured with high precision. The insert includes precisely machined contact surfaces and alignment features that ensure accurate barrel-to-stock alignment, compensating for tolerances in other parts of the rifle.
Solution Approach 2:
The insert design changes the geometric parameters of the barrel support interface, providing precise control over barrel position and orientation. By carefully designing the insert's contact surfaces, radii, and alignment features, the system achieves high accuracy despite looser manufacturing tolerances in other components.
4Strength
If a barrel band is used to mount the barrel to the stock, then the parts are locked together, but the adjustment is not finely tunable and accuracy is not improved
Solution Approach 1:
The barrel support insert provides a rigid, fixed-position support that ensures strong connection between barrel and stock. The insert is designed with precise geometric features that eliminate play and movement, providing both strength and positional accuracy without requiring adjustable mechanisms.
Data Source
AI summary
This disclosure describes systems, methods, and apparatus for a barrel support for a for a firearm stock. In one example, the barrel support has an elongate frame with a longitudinal axis extending between a fore portion and an aft portion, a first concave barrel recess shaped to support a first barrel, the first concave barrel recess positioned on a first side of the elongate frame. The exemplary barrel support also has a second concave barrel recess shaped to support a second barrel, the second concave barrel recess positioned on a second side of the elongate frame. In this example the first barrel is a tapered barrel, and the second barrel is a straight barrel.