SUPER DUTY RIFLE Description
5.56 NATO cal., GIO, mid-length gas system, 14.5 or 16 in. CHF chrome-lined barrel, super compact gas block, nanocoated Surefire closed-tined Warcomp or 1650 flash hider (permanently attached on 14.5 in. barrel), SSA-E X w/lightning bow trigger, B5 Systems enhanced Sopmod stock w/Mil-Spec 6-pos. buffer tube, 13 1/2 or 15 in. SMR MK16 rail w/center tab, Geissele Rifle Grip (GRG), Super Duty M4 upper/Mil-Spec lower receiver, Airborne charging handle, Luna Black (standard), DDC (Desert Dirt Color), Iridium (disc.), 40mm Green (disc.), gray (mfg. 2021 only), or OD Green finish.