This item is "new in box", never previously sold to a consumer, never fired (except possibly by the manufacturer), and carries a factory warranty. Manufacturer: CMMG Model: Resolute 100 Caliber: 5.56mm NATO (.223 Rem.) UPC: SKU: 55AC710 Action: Semi-automatic action Barrel Length: 16.1 Caliber Alternative: .223 Rem. Total Capacity: 30 Rate Of Twist: 1:7 RH Receiver Material: 7075 T6 Aluminum Safety: TRUE Safety Description: Manual Series: MK4 General Sights; None, Optic Ready Stock Material: SYNTHETIC Total Height; 3.5 Total Length: 38