Takedown Firearm Forend Storage and Barrel Positioning
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Solution Overview
Problem
Breakdown rifles and carbines face challenges such as inconsistent barrel harmonics, heat management, and protection of the muzzle during storage, especially when carried in backpacks or small cases, leading to reduced accuracy and increased complexity in stowage and transport.
Innovation Solution
A takedown firearm design featuring a stock assembly with a forend assembly that is removably couplable to the buttstock at multiple locations, allowing the barrel to be supported in a longitudinal firing position or at an angle, with a forend storage cavity and release mechanism to protect the muzzle and facilitate compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the firearm is folded at an axis near the rear of the receiver to reduce size, then the firearm can be more compactly stored, but the muzzle becomes exposed and susceptible to damage
Solution Approach 1:
The forend assembly is nested within a storage cavity in the stock assembly, with the barrel positioned inside the forend. This nesting arrangement protects the muzzle by enclosing it within the stock structure when in stowed configuration, while still allowing compact storage volume.
2Object-affected harmful factors
If the barrel length is shortened to reduce exposure during storage, then the muzzle is less exposed to damage, but the firearm's federal classification changes and licensing requirements increase
Solution Approach 1:
The forend assembly is designed to be movable between a deployed position (where the barrel extends for firing) and a stowed position (where the barrel is retracted into the stock). This dynamic configuration allows the barrel to maintain its full length for legal compliance while being protected during storage through the retracted position.
3Volume of moving object
If multiple pieces of the firearm are separated for compact storage in the stock, then the firearm can be more compactly stored, but the complexity of separation and reassembly increases
Solution Approach 1:
The firearm is segmented into two main assemblies: the stock assembly and the forend assembly. This segmentation allows the forend (containing the barrel) to be separated from and stored within the stock, achieving compact storage while maintaining a manageable number of components for assembly and disassembly.
4Adaptability or versatility
If the forend assembly is fixed in one position, then the structure is simpler, but the firearm cannot be adapted for different firing positions or storage configurations
Solution Approach 1:
The forend assembly incorporates a release mechanism that allows it to be moved between a locked deployed position (for firing) and an unlocked stowed position (for storage). This dynamic design provides configuration flexibility while maintaining relatively simple structural elements that can be easily manufactured and assembled.
Data Source
AI summary
A stock assembly for a takedown firearm and related methods are disclosed. The stock assembly has a buttstock assembly, and a forend assembly removably couplable to the buttstock assembly at a first location and a second location. When the forend assembly is coupled to the buttstock at the first location, the forend assembly is positioned to support a barrel of the firearm in a longitudinal firing position. When the forend assembly is coupled to the buttstock at the second location, the forend assembly is positioned to support the barrel at an angle relative to the longitudinal firing position.