Firearm Chassis Integrated Rail System Grip Geometry
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Solution Overview
Problem
There is a need for firearm grips that provide stability and maneuverability without protruding conspicuously beneath the action, which is restricted in certain jurisdictions, and also for rail interface systems that enhance precision and stability in modular rifle systems.
Innovation Solution
A tactical chassis with integrated rail systems and a grip design that includes a distal strut, connector, and hand grip, where the hand grip forms an acute angle with its lower surface to receive non-trigger fingers, and a method of securing accessories to the rail systems, allowing for various grip configurations that do not protrude conspicuously beneath the action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pistol grip is used to provide stability and maneuverability, then grip stability is improved, but the firearm may be restricted in certain jurisdictions due to protruding beneath the action
Solution Approach 1:
The grip is segmented from the traditional pistol grip configuration into a new geometric configuration that maintains stability functions while avoiding jurisdictional restrictions. The grip portions are repositioned and reoriented to provide ergonomic support without protruding beneath the action in a prohibited manner.
Solution Approach 2:
The grip employs asymmetric geometry with the first and second grip portions positioned at different locations and angles relative to the firearm body. This asymmetric arrangement provides stable hand placement while ensuring the grip does not protrude conspicuously beneath the action, thereby meeting legal requirements.
2Adaptability or versatility
If a modular rifle system uses traditional rail interface systems, then accessory mounting is possible, but precision and stability are insufficient
Solution Approach 1:
The rail interface system is merged with the chassis structure to form an integrated assembly. The first rail portion is positioned adjacent to the channel on the first side of the chassis, and the second rail portion is positioned adjacent to the channel on the second side, creating a unified structure that enhances both precision and stability while maintaining accessory mounting capability.
3Manufacturing precision
If rail portions extend above the barrel centerline, then accessory mounting precision is improved, but the overall firearm height increases
Solution Approach 1:
The rail portions are positioned in a lateral dimension adjacent to the channel rather than extending vertically above the barrel centerline. This dimensional repositioning allows the upper surfaces of the rail portions to be configured to extend above the centerline for precision mounting while maintaining a compact overall firearm height by utilizing the lateral space beside the channel.
Data Source
AI summary
A chassis for a firearm includes sidewalls, a forearm, and a first rail portion. The sidewalls define a trigger well and a magazine well therebetween. The sidewalls also define a proximal portion of a channel. The forearm is monolithically formed with the chassis and extends distally from the magazine well. The forearm defines a distal portion of the channel which is configured to receive a barrel of a firearm. The first rail portion extends from the forearm adjacent the channel on a first side of the chassis. The first rail portion defines part of a rail system that is configured to securely mount an accessory directly to the chassis.