TacFire AR-15 AR Barrel Features The TacFire AR Barrel is machined to accept standard AR-15 upper receivers making it a direct drop-in replacement for builders refreshing an existing rifle or finishing a new build. Chambered in 5.56x45mm NATO the 16 inch length keeps the rifle within typical non-NFA configurations while providing enough barrel length for full-velocity performance from 5.56 ammunition. A 1:8 twist rate is a versatile middle-ground choice stabilizing both lighter varmint-style bullets and heavier match or hunting projectiles without favoring one extreme. That flexibility makes the barrel a sensible choice for shooters who load a mix of ammunition types. A black nitride finish coats the barrel for improved corrosion resistance compared to a basic phosphate finish while also reducing friction during cycling. The matte black appearance matches most factory AR-15 finishes so the barrel blends in visually when swapped onto an existing upper. Because it is sold as a standalone replacement barrel rather than part of a complete upper assembly builders will need to transfer or source their own barrel nut gas block and gas tube during installation. For AR-15 owners looking for an affordable versatile 5.56 replacement barrel the TacFire AR Barrel is available for sale at GrabAGun. TacFire AR-15 AR Barrel Specifications Manufacturer: TacFire Model: AR Barrel Compatible Hosts: AR-15 Caliber: 5.56 Barrel Length: 16 Finish: Nitride Color: Black Twist Rate: 1:8 Available At: GrabAGun