Geissele Automatics Super Duty MOD1 Complete Upper Receiver for AR-15 556NATO 13.9 Inch Barrel Black (08-546B)

• Complete AR-15 upper receiver chambered in 5.56 NATO for rifle builds
• 13.9 inch cold hammer forged barrel pinned to 16 inch overall length
• M-LOK free float handguard provides accessory mounting and improved handling stability
• Includes Geissele Airborne charging handle for reliable manual operation under varied conditions
• Nanoweapon coated bolt carrier group enhances durability and corrosion resistance performance
• Anodized black finish with HuxWrx flash hider QD muzzle device installed

The Geissele Automatics Super Duty MOD1 Complete Upper Receiver 556NATO 13.9 Inch Barrel Black is a complete upper receiver designed for AR-15 platform rifles chambered in 5.56 NATO. This upper assembly integrates barrel, handguard, and operating components into a single unit. It is used as a complete upper for AR-15 builds or system replacement.

The Geissele Automatics Super Duty MOD1 features a 13.9 inch cold hammer forged barrel pinned to 16 inch overall length and includes an M-LOK free float handguard. This upper is equipped with a HuxWrx flash hider QD muzzle device and a Geissele Airborne charging handle. The anodized black finish provides consistent surface protection across components. In normal operation, this complete upper fits AR-15 lower receivers and includes a Nanoweapon reliability enhanced bolt carrier group. The M-LOK interface supports accessory attachment in modular configurations. This upper receiver is categorized under complete upper receivers and is intended for range use and configured rifle setups.