Adjustable Gas Block with Front Access for Firearm Direct-Impingement Systems
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Solution Overview
Problem
Existing firearms with fixed gas systems often experience over-gas or under-gas situations due to environmental changes, firearm configuration, or accessory installations, leading to jamming, increased stress, and reduced service life.
Innovation Solution
An adjustable gas system with a one-piece gas block body and a partial annular gas regulator, where the adjustment access is moved to the front around the barrel, allowing for direct hand adjustments without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed gas system is used, then the firearm is lighter with fewer parts, but it cannot adapt to environmental changes or configuration changes, leading to over-gas or under-gas situations
Solution Approach 1:
The gas block is designed with an adjustable gas port size capability, transitioning from a fixed to a dynamic configuration. The adjustor mechanism allows the gas port diameter to be changed based on environmental conditions and firearm configurations, enabling the system to adapt to varying pressure conditions while maintaining a relatively simple overall structure.
2Ease of operation
If adjustment access is provided on the side or back of the gas block, then gas pressure can be adjusted, but the adjustment is difficult to access or requires tools
Solution Approach 1:
Instead of providing adjustment access from the side or back of the gas block, the invention inverts the approach by providing adjustment access from the front of the gas block, around the barrel. This allows the user to easily access and adjust the gas pressure with their hand without requiring tools, while maintaining a simple adjustment mechanism.
3Reliability
If the gas port size is fixed, then the system is simpler, but it cannot optimize gas flow for different conditions, causing jamming or failure to cycle
Solution Approach 1:
The gas block incorporates an adjustor mechanism that changes the physical parameter of gas port diameter. By providing multiple adjustment positions that correspond to different gas port sizes, the system can optimize gas flow for various environmental conditions and firearm configurations, ensuring reliable cycling while maintaining a relatively simple regulation structure.
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
The adjustable gas system optimizes gas flow by varying the diameter of the gas port hole, preventing jamming and reducing stress on the firearm, thereby extending its service life and improving reliability across different conditions.
Implementation Method 1
a gas flow hole that receives a gas tube of the firearm... as the gas regulator is rotated around the barrel from a first position to a second position, a diameter of a resultant gas port hole changes from a first size to a second size
Data Source
AI summary
An adjustable gas system for a firearm includes a one-piece gas block body, configured to be fixed to a barrel of the firearm, and a partial annular gas regulator. The gas block includes a gas flow hole that receives a gas tube of the firearm. The gas block body also includes a gas block body bulge and a ring at one end of the gas flow hole. The gas block body clamps to a barrel of the firearm by: (i) set screw(s), and (ii) direct/physical contact of the gas block body bulge and the ring. The gas regulator, when installed on the barrel, rotatably and partially surrounds the barrel such that, as the gas regulator is rotated around the barrel from a first position to a second position, a diameter of a resultant gas port hole changes as controlled by allocation holes on the gas regulator.