Geissele Super Duty MOD1 5.56 12.5" Black SBR

Geissele Super Duty MOD1 12.5" Black SBR 08-541B carries the same core Super Duty engineering as the ambidextrous MOD1-A builds, just on a standard Mil-Spec lower rather than the billet ambi receiver — a straightforward, proven configuration for shooters who don't need mirrored controls. The 12.5" barrel is cold hammer forged, chrome-lined, and cut to a 1:7 twist on Geissele's tapered profile, running a carbine-length gas system through a Super Compact Gas Block with a .065" gas port sized specifically for this length. This Geissele Super Duty 12.5 build channels that gas through a Nanoweapon®-coated Reliability Enhanced Bolt Carrier Group with a forged Stressproof Bolt, holding up to sustained round counts better than standard bolts. The SSA-E X® trigger with Lightning Bow® gives a clean two-stage break, splitting the difference between a classic M4 trigger and a flat-bow design. An 11.5" SMR MK16 rail with Geissele's Center Tab mating keeps the front end rigid, and a B5 Systems Enhanced SOPMOD stock rides a mil-spec buffer tube with QD endplate for a solid cheek weld and sling attachment options. Key Features: 12.5" cold hammer forged, chrome-lined barrel, 1:7 twist Carbine-length gas system, .065" gas port, Super Compact Gas Block Nanoweapon®-coated Reliability Enhanced BCG, forged Stressproof Bolt SSA-E X® trigger with Lightning Bow® 11.5" SMR MK16 rail w/ Geissele Center Tab Airborne Charging Handle (ACH®) B5 Systems Enhanced SOPMOD stock Approx. 6.5 lbs, black finish This Geissele Super Duty SBR delivers full-line reliability in a straightforward, standard-control configuration built for shooters who want proven performance without the ambidextrous premium. Geissele Automatics Geissele Super Duty MOD1 5.56mm 12.5" Bbl Black SBR (NFA) 08-541B