Geissele Super Duty AR-15 Barreled Receiver 5.56x45mm NATO 16" Barrel Black

The Geissele Super Duty Upper (Stripped) features the quality and workmanship you've come to expect from the Geissele name. At the heart of this stripped upper is a Super Duty upper receiver that mates to an MK16 Super Modular rail via a center aligning tab, removing any chance of rail rotation. This family of rails is renowned by operators for their performance and comfort. It features an in-house, Manganese Phosphate coated, CHF, Chrome Lined barrel. Geissele barrels are precision machined and