The Fostech Origin-12 is an AR-style gas-operated semi-automatic shotgun built around a proprietary long-stroke gas piston system optimized for rapid fire. Fostech claims the Origin-12 is the fastest semi-automatic shotgun in production based on gas system cycling speed. It ships with a 10-round box magazine and an AR-15 compatible pistol grip and stock interface. The Echo Sport trigger — Fostech's binary trigger — is available as an upgrade. Type: Shotgun Action: Semi-Automatic Caliber: 12 Gauge Capacity: 10 Year introduced: 2016, USA Weight: 112 oz Overall length: 40" Status: Active Intended use: tactical, competition, sporting