CMMG 55DA3AC Low-Profile Gas Block .625

CMMG Low-Profile Gas Block Assembly

The CMMG 55DA3AC represents a straightforward, no-nonsense approach to AR-15 gas system management. This low-profile gas block is engineered from 4140 chrome moly steel, a material choice that ensures durability and reliability under the demands of modern shooting.

Key Features

• .625" Inner Diameter – Fits standard AR-15 barrel profiles
• Low-Profile Design – Allows mounting of free-float rail systems and optics without obstruction
• 4140 Chrome Moly Steel Construction – Proven material for strength and longevity
• Installation Hardware Included – Comes with all necessary screws for mounting

Practical Application

This gas block serves as an excellent replacement for fixed A2-style front sights, particularly if you're modernizing your rifle with a free-float handguard or low-mounted optics. The low-profile configuration keeps your sight line clear and provides flexibility in rail system selection.

Simple, effective, and built to last—exactly what you need for a reliable AR-15 platform.