Note: This is a pre owned rifle, no box. Doesn't come with magazine. Has some paint on it from the previous owned, Comes with Holosun ARO-MSR-GD. Manufacturer: Aero Upper: BCM-KMR-A13 Barrel Length: 16" Threaded: Yes Caliber: 5.56 NATO Optic: Holosun ARO-MSR-GD Gold dot Stock: Reptilia Recc-e Grip: Magpul Comes with Magpul bad lever & Radian Raptor charging handle.