ATI's Omni Hybrid 410 shotgun is a gas operated, shortstroke, balanced piston system designed to use 2.5" 410 shells. It functions with a wide variety of 410 loads from bird shot to slugs. The proprietary gas system and bolt carrier group are patent pending. The Omni Hybrid has an 18.5" barrel threaded for Remington-style chokes. The complete rifle will be built on ATI's Omni Hybrid lower with a six-position adjustable SuperStoc and ambidextrous sling attachment plate. It has a 10" free-floating quad rail handguard and comes with a 5-round magazine.