The AAC BlastOut is a muzzle accessory designed to improve the modern sporting rifle user experience by significantly reducing blast pressure and concussive forces. The design directs the muzzle blast forward of the shooter. Range neighbors, training partners, and team members lateral of the muzzle benefit by the blast re-direction. The proven industry-standard 51-tooth mounting system and the upgraded 90-tooth taper mounting system allow for quick and easy one-handed operation. The steel body is designed for hard-use and long-term durability while a nitride finish creates a wear-resistant surface. The BlastOut adds only 6 ounces in weight and negligible overall length. Body Diameter - 1.50". Body Outer Diameter Max at Latch - 1.57".