Geissele Super Duty Upper 5.56mm 11.5" Black

Inter-Store Transfer
If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. 

Geissele's Super Duty upper receiver groups features the latest in weapons technology. This complete 11.5" upper receiver includes a 11.5" CHF, Chrome-lined barrel with a 1:7" twist and includes a Surefire Closed-Tine flash hider. These barrels are precision machined and cold hammer forged in-house at Geissele's North Wales, PA facility. The 11.5" model uses a carbine-length gas system and utilizes a Super Compact Gas Block with bomb-proof installation for reliability and optimal performance.

The Super Duty uses a 10.5" MK16 Modular Rail with M-LOK compatibility and features an alignment tab that mates to the upper receiver. This rail is a variant of the same rail used by USASOC and renowned operators.

Also included is a Geissele REBCG with a Nanoweapon coated BCG for exceptional wear and corrosion resistance. The carrier is constructed from 8620 steel and uses a staked, chrome-lined gas key. The bolt is made from Carpenter 158+ which is forged for a stronger and fatigue resistant structure. Each bolt is inspected, high pressure tested and mag particle inspected.

This is a complete upper receiver and will mount to AR15/M4 lower receivers. All NFA Rules apply.