Adjustable Gas Key for Firearm Bolt Carrier Recoil Control
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Solution Overview
Problem
Conventional gas-operation systems in firearms lack the ability to adjust the force of the blowback, leading to unreliable operation due to variations in propellant gas amounts caused by different ammunition, suppressor use, and manufacturing inconsistencies, resulting in issues like short stroke and improper ejection of spent shells.
Innovation Solution
An adjustable gas key with a base and tube portion, featuring an inlet and outlet tube configuration and an adjustment device that modifies the inner volume, allowing users to adjust the gas flow to optimize bolt carrier recoil and ejection performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gas key is used, then the structure is simple and easy to manufacture, but the gas operation force cannot be adjusted leading to unreliable operation
Solution Approach 1:
The gas key incorporates an adjustable inner volume chamber that can be modified to change the gas operation force. This dynamic adjustment capability allows the system to adapt to different ammunition types and suppressor configurations, resolving the contradiction between maintaining simple structure and achieving reliable operation under varying conditions.
Solution Approach 2:
The invention changes the physical parameter of the inner volume size to control the gas operation force. By adjusting the inner volume, the system can optimize performance for different ammunition types and suppressor setups, thereby improving reliability without requiring a completely redesigned complex system.
2Adaptability or versatility
If the inner volume is fixed, then the manufacturing precision is easier to achieve, but the system cannot accommodate variations in propellant gas amounts
Solution Approach 1:
The gas key transitions from a fixed inner volume to an adjustable inner volume that can be modified after manufacturing. This allows the system to adapt to different ammunition types and suppressor configurations without requiring extremely tight manufacturing tolerances, as the adjustment capability compensates for variations in propellant gas amounts.
3Reliability
If no adjustment device is added, then the device complexity remains low, but the ejection performance and bolt carrier recoil cannot be optimized
Solution Approach 1:
The invention introduces an adjustment device that modifies the inner volume parameter of the gas key. This single parameter change capability allows optimization of bolt carrier recoil and ejection performance for different ammunition types and suppressor configurations, achieving reliable ejection with minimal additional complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise adjustment of the gas flow to ensure reliable operation by accommodating variations in propellant gas, improving ejection patterns and addressing issues related to different ammunition and system backpressure.
Implementation Method 1
a portion of high pressure gas from the cartridge being fired is used to power a mechanism
Implementation Method 2
propellant gas produced by firing the firearm is directed through the gas tube and through the inlet tube and exits through the outlet tube
Data Source
AI summary
An adjustable gas key for use with a firearm is provided. The adjustable gas key includes a base portion and a tube portion coupled to the base portion. An inlet tube extends through the tube portion and an outlet tube angled from the inlet tube exits through a bottom side of the base portion. The adjustable gas key includes an inner volume located at a junction of the inlet tube and the outlet tube. The adjustable gas key also includes an adjustment device operatively coupled to the adjustable gas key, wherein the adjustment device adjusts a size of the inner volume. The adjustable gas key is operatively coupled to a bolt carrier of the firearm, wherein adjustment of the size of the inner volume adjusts the force of action of the bolt carrier.