The CMMG ZEROED Adjustable Gas Block, Part 55DA31F, is designed for AR-15 platforms that require precise gas regulation and reliable cycling. Constructed from durable 4140 steel, this .750-inch adjustable gas block provides a secure fit on compatible barrels while allowing users to fine-tune the rifle’s gas system for specific ammunition, suppressor use, or operating conditions. Its black nitride finish adds corrosion resistance and supports dependable service life in demanding environments.
The adjustable design helps manage excess gas, which can reduce felt recoil, minimize muzzle movement, and improve overall shooting comfort when properly tuned. This CMMG gas block is suitable for builders, armorers, and firearm enthusiasts seeking a practical upgrade for compatible AR-15 configurations. The compact design supports installation under many free-float handguards, while the included hex key assists with adjustment and setup.
The CMMG ZEROED Adjustable Gas Block is identified by manufacturer Part Number 55DA31F and features a .750-inch internal diameter for compatible barrels. Verify barrel specifications, handguard clearance, and installation requirements before purchase. Professional installation and proper gas-system tuning are recommended to help ensure safe, reliable firearm operation.
Features:
- Brand: CMMG
- Part Number: 55DA31F
- Platform: AR-15 compatible accessory
- Type: Adjustable gas block
- Internal Diameter: .750 inch
- Material: 4140 steel
- Finish: Black nitride
- Included: Hex key
- Adjustment: Enables gas-system tuning for compatible configurations
