CMMG Low Profile Gas Block – .625" ID for AR-15 Barrels

The CMMG Low Profile Gas Block is a drop-in replacement for standard-height gas blocks on AR-15 platform rifles with .625" diameter gas journals. This low-profile design sits flush under most free-float handguards, eliminating bulk and providing a cleaner sight picture when running backup iron sights. Upgrading to a low-profile gas block is essential when installing slim handguards that don't accommodate taller A2-style front sight bases.

Machined from steel with a durable black finish, this gas block features a standard .750" setscrew system for secure, repeatable installation. While many shooters can install this themselves with basic tools and proper alignment, those unfamiliar with gas system timing should consider professional installation to ensure reliable function. The block includes setscrews and accepts standard AR-15 gas tubes (not included).

• Part Type: Low Profile Gas Block
• Compatible Firearms: AR-15 platform rifles with .625" gas journal barrels
• Material: Steel
• Finish: Black
• Installation: Drop-in with proper tools; professional installation recommended for those unfamiliar with gas system alignment
• Includes: Gas block, setscrews