Geissele Automatics Super Duty MOD1 11.5" Complete Upper (5.56mm) with MK16 Rail
The Geissele Super Duty MOD1 11.5" Complete Upper is a factory-built AR-15 upper receiver group configured around an 11.5" CHF, chrome-lined 5.56mm barrel with a 1:7 twist and a carbine-length gas system. The MOD1 setup includes Geissele's Super Compact Gas Block, a 10.5" MK16 rail with Geissele Center Tab alignment, and a HUXWRX Flash Hider-QD 556 muzzle device (1/2x28 threads).
This unit includes a Geissele bolt carrier group and charging handle.