CMMG ZEROED Adjustable Gas Block - .750" Steel for AR-15 and LR-308
The CMMG ZEROED Adjustable Gas Block provides 20-position gas adjustment for AR-15 and LR-308 platforms equipped with a .750" gas block journal. Whether tuning a rifle for suppressor use or adjusting gas flow for different ammunition, this adjustable gas block allows shooters to regulate the amount of gas delivered to the operating system. Its detent-based adjustment mechanism provides repeatable settings, while the sacrificial cleanout chamber and user-serviceable design help manage carbon accumulation.
Quick Glance:
Manufacturer: CMMG
Product Series: ZEROED
Product Type: Adjustable Gas Block
Gas Block Diameter: .750"
Material: Steel
Color: Black
Adjustment: 20-Position Detent System
Compatibility: AR-15 and LR-308 Platforms with .750" Gas Block Journals
Maintenance: User-Serviceable Design
Included Accessories: 6" 3/32" Hex Adjustment Wrench and Gas Tube Roll Pin
Full Details:
20-Position Adjustable Gas System:
The CMMG ZEROED Adjustable Gas Block features a 20-position detent adjustment screw that allows users to fine-tune gas flow. Adjusting the gas system can help reduce excessive bolt carrier velocity and felt recoil in overgassed configurations while maintaining sufficient gas flow for reliable cycling.
Suppressor and Ammunition Tuning:
Suppressor use and changes in ammunition can affect the amount of gas needed for consistent operation. The adjustable design allows gas flow to be tailored to the rifle's operating conditions, helping shooters find an appropriate balance between reliable cycling and excess gas.
Sacrificial Carbon Cleanout Chamber:
The ZEROED gas block incorporates a sacrificial cleanout chamber designed to provide a dedicated area for excess carbon accumulation. Combined with its user-serviceable construction, this feature makes it possible to clean accumulated carbon as part of routine maintenance.
Steel Construction:
Manufactured from steel with a black finish, this gas block is designed for use on barrels with a .750" gas block journal.
Adjustment Wrench and Roll Pin:
Each gas block includes a 6" long, 3/32" hex wrench for adjusting gas settings and a gas tube roll pin for installation.
Key Features:
- 20-position detent-based gas adjustment
- Allows gas-system tuning for suppressor use and different ammunition
- Designed for .750" diameter barrel gas block journals
- Steel construction with black finish
- Sacrificial carbon cleanout chamber
- User-serviceable design for maintenance
- Includes 6" 3/32" hex adjustment wrench
- Includes gas tube roll pin
Compatibility:
The CMMG ZEROED .750" Adjustable Gas Block is intended for compatible AR-15 and LR-308 barrel configurations with a .750" gas block journal. Confirm barrel journal diameter, gas port alignment, and handguard clearance before installation.
Ballistic Barn offers AR-platform parts and components for customers building, maintaining, and upgrading their rifles. The CMMG ZEROED Adjustable Gas Block provides a practical option for shooters who want greater control over gas-system operation.
