This unique blast can was designed for those who need a device that directs muzzle gasses and blast away from the shooter but want a can that matches the look of an handguard better than a round can. Machined from 6061 aircraft grade aluminum billet and hardcoat anodized. 3.25 inches long and 1.3 inches across the widest point. Note: Comes with crush washer. Features: 6061 aircraft grade aluminum. Hard-coat anodized. Sturdy construction. Light weight construction. Made in U.S.A. 9mm Threaded .5-36