The ATI Omni Hybrid is a distinctive AR-15 with a polymer lower receiver and forged aluminum upper, dramatically reducing weight while maintaining mil-spec compatibility and offering a MSRP well below competing metal-receiver ARs. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2013, USA Weight: 56 oz Overall length: 32" Status: Active Intended use: Home Defense, Tactical