XTS AR-10 Complete Lower Parts Kit Black. 62x51mm NATO .308 Winchester Gun Make: AR Platform Gun Model: AR-10 AR-15 Gun Type: Semi-Automatic Rifle Additional Features: Kit for AR-10 and AR-15 Categories Size: One Size Quantity: 1 Age Group: Adults Gender: Unisex Features of XTS AR-10 Complete Lower Parts Kits Standard Fire Control Group: The kit includes a standard mil-spec fire control group which consists of a trigger hammer disconnector and associated springs and pins. Ergonomic Components: The kit features ergonomically designed components such as the pistol grip and trigger guard contributing to a comfortable and user-friendly shooting experience. Pivot and Takedown Pins: The pivot and takedown pins are included for secure attachment of the upper and lower receivers. Package Contents: XTS AR-10 Complete Lower Parts Kits XTS LPK-308: AR-10 Complete Lower Parts Kit Black