M4e1 Upper Receivers Complete .300 Blackout - M4e1 300blk Assemble Upper Gov 16''''bbl Pistol-Length Thrd Blk

This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Their proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. M4E1 Threaded Assembled Upper Receiver 7"" M-LOK ATLAS S-ONE Handguard with 7" .300 Blackout CMV Barrel OR 9"" M-LOK ATLAS S-ONE Handguard with 10"" .300 Blackout CMV Barrel OR 12"" M-LOK AT Mfg: Aero Precision