Geissele Super Duty Upper 5.56mm 16" 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. You will be notified by e-mail when your item arrives.

Geissele's Super Duty upper receiver groups features the latest in weapons technology. This complete 16" upper receiver includes a 16" mag phosphated, 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 16" model uses a mid-length gas system and utilizes a Super Compact Gas Block with bomb-proof installation for reliability and optimal performance.

The Super Duty uses a 15" 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.