Shaw Barrels AR-15 Barrel Features The Shaw Barrels AR-15 Barrel is machined from 416R stainless steel a material prized for its corrosion resistance and ability to hold tight tolerances across repeated firing cycles. Chambered in 6mm ARC this 18 inch rifle length barrel pairs a 1 in 7.5 inch twist rate with the HBAR profile to stabilize heavier for caliber bullets at extended distances. The straight fluting cut along the barrel reduces overall weight while maintaining the stiffness needed for consistent harmonic behavior shot to shot. A 5/8x24 threaded muzzle allows shooters to add a muzzle brake compensator or suppressor to further tune recoil and manage shot to shot follow up. The barrel wears a bead blast matte finish that cuts glare in the field while standing up to day to day handling and weather exposure. At 2.2 pounds it keeps the front end of an AR-15 build balanced for offhand shooting and extended range sessions alike. Manufactured in the USA the barrel reflects Shaw s reputation for precision rifle barrel production built to demanding tolerances. This is a strong option for shooters building a dedicated 6mm ARC precision rifle or upgrading an existing AR platform for long range performance. Shaw Barrels AR-15 Barrel Specifications Manufacturer: Shaw Barrels Model: AR-15 Barrel Caliber: 6mm ARC Barrel Length: 18 Barrel Finish: Bead Blast Matte Material: 416R Stainless Steel Barrel Type: Rifle Length Twist Rate: 1:7.5 Thread Pattern: 5/8x24 Barrel Description: HBAR Profile Straight Flute Weight: 2.2 lbs Available At: GrabAGun