11.5 Pre-Ban Heavy Profile Flat Top Barrel Assembly CARBINE Gas System - Includes - 11.5 1x9 twist Heavy Profile - Chrome Moly Vanadium barrel - Flat Top Upper with White T-Marks & M4 Feed Ramps - HPT/MPI tested Bolt and Carrier assembly - Charging Handle - CAR Handguards - Pistol Tube w/ Receiver End Plate & Castle Nut - CAR Buffer Sprint & H-Buffer
