Geissele Automatics Super Duty MOD1 Features
This upper receiver includes a premium HuxWrx Flash Hider-QD muzzle device for quick suppressor attachment. The M-LOK free-float handguard offers enhanced modularity and stability, while the Geissele Airborne Charging Handle ensures smooth and reliable operation.
At the core of this upper receiver is the Nanoweapon Reliability Enhanced Bolt Carrier Group (BCG), designed for extreme durability and consistent performance. The Mil-Spec M4 upper receiver assembly and Geissele’s meticulous craftsmanship ensure a long-lasting, high-performing system suitable for any mission.
Geissele Automatics Super Duty MOD1 Specifications
- Caliber: 5.56 NATO
- Barrel Length: 11.5 inches
- Twist Rate: 1:7
- Barrel Material: Cold Hammer Forged
- Muzzle Device: HuxWrx Flash Hider-QD
- Handguard: M-LOK Free Float
- Charging Handle: Geissele Airborne Charging Handle
- Bolt Carrier Group: Nanoweapon Reliability Enhanced BCG
- Overall Length: 20.75 inches
- Weight: 3 lbs 8 oz
- Finish: Anodized, Desert Dirt Color
| Barrel Length | 11.5 |
|---|---|
| Caliber | 5.56 |
| Condition | New in Box |
| Finish Per Color | Desert Dirt |
| Manufacturer | Geissele Automatics |
| Manufacturer Part Number | 08-544S |
| Model | Super Duty MOD1 Upper |
| Type | Uppers |
| UPC | 810081133739 |





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