Manufactured with confidence and without compromise, the Geissele Automatics Super Duty MOD1 5.56 10.3 URG BLK adds value to the platform while continuing the reputation for excellence. This complete upper receiver offers unmatched performance, accuracy, and reliability with a 10.3" Cold Hammer Forged barrel and Nanoweapon-coated Reliability Enhanced Bolt Carrier Group. Ideal for range time and training, the Super Duty MOD1 provides superior ergonomics and modularity. Geissele Automatics is renowned for its innovation and quality.