CMMG Gas Block Assembly Low Profile .625inch ID

The CMMG Gas Block Assembly Low Profile .625inch ID is a precision-engineered gas regulation component designed for AR-platform rifle builders and gunsmiths who demand reliable, repeatable performance. This low-profile gas block is engineered to function as a critical interface between the barrel and gas tube, managing propellant gases to cycle the action consistently across varying ammunition loads and environmental conditions. Whether you're building a lightweight patrol rifle, a precision competition platform, or a specialized short-stroke system, this assembly provides the foundation for reliable operation.

Featuring a .625-inch inner diameter specification, this CMMG gas block assembly is optimized for mid-length and rifle-length gas systems on standard AR-15 barrels. The low-profile design minimizes sight line obstruction and reduces overall rifle profile, making it ideal for setups where accessory rail space or optic mounting clearance is a priority. Manufactured to CMMG's exacting standards, the assembly includes all necessary installation hardware, enabling straightforward barrel installation without requiring additional components or custom fitting. The robust construction withstands sustained fire cycles while maintaining precise gas port alignment.

This gas block assembly is ideal for AR-15 builders, competitive shooters, military contractors, and firearm enthusiasts seeking a no-compromise drop-in solution. Installation is straightforward—simply secure the assembly to your barrel using the included screws, ensuring proper alignment with your gas tube. Compatible with standard AR-pattern barrels featuring .625-inch gas ports, this assembly integrates seamlessly into mid-length and rifle-length configurations. Its compact footprint and reliable performance make it a trusted choice for both duty rifles and precision builds where dependability cannot be compromised.