The Luth-AR GB-750-A Adjustable Gas Block is a low-profile, user-tunable gas block designed for .750" diameter barrels on .223/5.56 AR-15 and M16 platforms. Machined from tough 4140 Chrome-Moly steel with a durable Black Nitride finish, it allows precise gas regulation to optimize cycling, reduce recoil, and improve reliability across different ammunition types, barrel lengths, and suppressor setups.
Featuring a front adjustment screw for easy gas tuning and a side locking screw to secure your setting, this gas block is a must-have upgrade for suppressed rifles, short-barreled builds, or anyone seeking smoother, more consistent performance without over-gassing.
Featuring a front adjustment screw for easy gas tuning and a side locking screw to secure your setting, this gas block is a must-have upgrade for suppressed rifles, short-barreled builds, or anyone seeking smoother, more consistent performance without over-gassing.
Features
- Adjustable low-profile design fits .750" barrel diameter
- Front screw adjusts gas flow with side locking screw for secure settings
- 4140 Chrome-Moly steel construction with Black Nitride finish
- Includes two 1/4-20 set screws, roll pin, and gas adjustment screws
- Overall length 1.0365" and height 1.33" for a sleek profile
- Improves reliability with suppressors, different ammo, and custom barrels
- Easy to install with standard tools
- Proudly made in the USA by Luth-AR
