Product Description The MR762A1 is a semi-automatic rifle developed by Heckler & Koch as a premium level commercial/civilian firearm with match rifle capability. Like the entire line of HK416/HK417/MR556A1 long guns, the MR762A1 is a major product improvement over conventional AR-type carbines and rifles. The MR762A1 uses the HK proprietary gas piston operating system, employing a piston and a solid operating "pusher" rod in place of the gas tube normally found in many AR15/M16/M4/AR10-type firearms. Specifications UPC 642230260245 Manufacturer HK Manufacturer Part # 81000540 Model MR762A1 Action Semi-automatic Type AR Caliber 762NATO Barrel Length 16.5" Color Black Grips Polymer Accessories 1 Mag Capacity 20Rd Description MLOK Sights Front/Rear Flip Sights Subcategory Modern Sporting Rifles Stock Collapsible