Geissele Automatics 08-188LB: This phenomenal Geissele Super Duty Rifle features the latest in firearms technology available. This AR-15 rifle is chambered in .223/5.56 and features a Nanoweapon coated Surefire SF3P flash hider mounted to a 16” magnesium phosphate cold hammer-forged, and chrome lined 1:7 twist Geissele barrel. These barrels are precision machined utilizing the highest quality materials at their state of the art facility. The Super Mid-length gas system and Geissele Super Compact Gas Block (with bomb-proof installation) ensures reliability and optimal performance in extreme conditions and heavy use. As if this value could not get any better, this rifle comes equipped with the new SSA-E X Trigger and B5 Systems SOPMOD adjustable stock.