Aero Precision APAR502504M65: This AR15 Complete Upper features a 16\" 5.56 Mid-Length Barrel w/ Pinned FSB and Magpul MOE Mid-Length Handguard. This complete upper DOES NOT include a BCG and Charging Handle. Upper Features: Upper: Standard AR15 Upper Receiver - FDE Barrel: 16\" 5.56 Mid-Length Barrel w/ Pinned FSB Handguard: Magpul MOE Mid-Length Handguard - FDE Gas System: Mid-Length Gas System Muzzle Device: Standard A2 Flash Hider