CMMG Low-Profile Gas Block .625 ID — 4140 Steel

Description

The CMMG Low-Profile Gas Block is a .625 inch inside diameter gas block designed for AR-15 platforms. Manufactured from 4140 chrome moly steel with a black finish, it installs in place of standard front sight blocks or under free-float rails. The unit ships with installation screws and is intended for standard direct-impingement gas systems.

Key Specifications

• The inside diameter is .625 inches to match compatible barrels and gas ports.
• Construction is from 4140 chrome moly steel for durability.
• The finish is black for a low-profile appearance.
• Installation screws are included with the gas block.
• Designed for the AR-15 platform and common gas-system configurations.
• The model designation is Low-Profile.
• Overall dimensions are 0.90 x 3.05 x 4.55 inches.
• Height is 0.9000 inches.
• Width is 3.0500 inches.
• Length is 4.5500 inches.

Compact and purpose-built, this CMMG Low-Profile Gas Block is a straightforward component for builders and technicians seeking a durable, low-visibility gas solution. Its 4140 chrome moly construction and included hardware make it suitable for replacing A2-style blocks or installing under rails where a slim profile is required. The design supports common AR-15 gas-system layouts without unnecessary complexity.