VKTR VK Complete Upper Receiver 5.56 Black 16 in. 15 in Handguard 16" cerakote complete piston upper with 15" handguard;Precision-machined patented bolt carrier group;Continuous 12 o&&';;clock Picatinny rail for accessory integration;Thermal fit receiver to maximize accuracy and prevent POI shift;Patented low-profile VK-1 piston system for reliable performance;Radian Weapons Raptor charging handle;A2 flash hider and machined cooling flutes for barrel efficiency;Low profile MLOK handguard for easy accessory attachmenttable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 7600 Product Group Code: 7600O Product Sub Group 1: 7600O6 Inactive: No