





Geissele Automatics Super Duty MOD1 5.56 NATO Complete Upper Receiver - 11.5"
The Geissele Automatics Super Duty MOD1 5.56 NATO Complete Upper Receiver represents the latest advancement in the Super Duty series, offering enhanced features while preserving the renowned performance and reliability. Built upon the foundation of the original Super Duty platform, the MOD1 incorporates refined ergonomics and modularity. At the core of this upper is a 11.5” cold hammer forged, chrome-lined barrel paired with a Nanoweapon-coated Reliability Enhanced Bolt Carrier Group, both rigorously tested for durability and accuracy. The Super Duty's balanced gas system, including the Super Gas Block and optimized gas port, minimizes recoil while ensuring consistent cycling. Rounding out this AR-15 upper is a center-tab mated MK16 rail with QD inserts, and an ambidextrous Airborne Charging Handle.
Features:
11.5” Cold hammer forged, chrome-lined barrel
Nanoweapon-coated Reliability Enhanced Bolt Carrier Group
High-Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) barrel and bolt
Super Duty Gas Block with fine-tuned gas port sizing
10.5" free float M-LOK SMR MK16 rail
Center-tab mated MK16 rail with stainless steel QD inserts
Ambidextrous Airborne Charging Handle
HUXWRX Flash Hider-QD muzzle device
The Geissele Automatics Super Duty MOD1 5.56 NATO Complete Upper Receiver represents the latest advancement in the Super Duty series, offering enhanced features while preserving the renowned performance and reliability. Built upon the foundation of the original Super Duty platform, the MOD1 incorporates refined ergonomics and modularity. At the core of this upper is a 11.5” cold hammer forged, chrome-lined barrel paired with a Nanoweapon-coated Reliability Enhanced Bolt Carrier Group, both rigorously tested for durability and accuracy. The Super Duty's balanced gas system, including the Super Gas Block and optimized gas port, minimizes recoil while ensuring consistent cycling. Rounding out this AR-15 upper is a center-tab mated MK16 rail with QD inserts, and an ambidextrous Airborne Charging Handle.
Features:
11.5” Cold hammer forged, chrome-lined barrel
Nanoweapon-coated Reliability Enhanced Bolt Carrier Group
High-Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) barrel and bolt
Super Duty Gas Block with fine-tuned gas port sizing
10.5" free float M-LOK SMR MK16 rail
Center-tab mated MK16 rail with stainless steel QD inserts
Ambidextrous Airborne Charging Handle
HUXWRX Flash Hider-QD muzzle device