Geissele Automatics Super Duty MOD1 Complete Upper Receiver for AR-15 556NATO 13.9 Inch Barrel Desert Dirt Color (08-546S)

• 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 desert dirt color finish with HuxWrx flash hider QD muzzle device installed

The Geissele Automatics Super Duty MOD1 Complete Upper Receiver is a complete upper receiver designed for AR-15 platform rifle assembly and operation.

This complete upper receiver is chambered in 5.56 NATO and uses a 13.9 inch cold hammer forged barrel pinned to 16 inch overall length. It features an M-LOK free float handguard and includes a Geissele Airborne charging handle and a Nanoweapon reliability enhanced bolt carrier group. The anodized finish in Desert Dirt Color provides a defined exterior surface. This model fits AR-15 pattern lowers and is configured as a complete upper receiver assembly. In typical setups, the unit integrates with standard AR-15 components for range use and general rifle configuration. The Geissele Automatics Super Duty MOD1 Complete Upper Receiver uses a HUXWRX Flash Hider-QD muzzle device and maintains a fixed barrel assembly format for consistent installation.