TacFire AR-15 Gen3 Adjustable Gas Block Features The TacFire Gen3 Adjustable Gas Block is machined from steel and sized to fit a .750 inch barrel diameter a common gas block size found on many AR-15 builds. Its adjustable design allows the shooter to dial in exactly how much gas is diverted to cycle the action which is especially useful when running a suppressor or switching between supersonic and subsonic ammunition. By fine tuning gas flow shooters can reduce excess bolt velocity which in turn can reduce wear on internal components and soften the felt recoil impulse. This level of control is something a fixed gas block simply cannot offer. Finished in Black the Gen3 gas block is built to blend into most AR-15 builds without drawing attention while still delivering real functional benefit. Steel construction ensures the block can handle the heat and pressure cycling through it shot after shot without premature wear. This gas block is a practical addition for competitive shooters suppressor users and anyone looking to reduce the harshness of their AR-15 s cycling. For AR-15 builders seeking tunable reliability the TacFire Gen3 Adjustable Gas Block is available for sale at GrabAGun. TacFire AR-15 Gen3 Adjustable Gas Block Specifications Manufacturer: TacFire Model: Gen3 Adjustable Gas Block Compatible Hosts: AR-15 Color: Black Material: Steel Diameter: .750 Available At: GrabAGun