VKTR Industries 13.7in VK-1 Complete AR-15 Upper w/ SOLGW Nox Muzzle Device Cerakote FDE V-4027-3410-005-RP. 7in cerakote complete piston upper with 12.6in handguard pin and welded muzzle break. With the pinned and welded muzzle devices like the Nox...