The Super Duty Rifle features the latest in weapon technology available exclusively from Geissele Automatics. This 14.5" rifle chambered in 5.56mm features a Nanoweapon coated Surefire Closed-Tine Flash Hider mounted to an in-house 14.5" durable black oxide coated, Cold Hammer Forge, Chrome Lined, 1-7 twist Geissele barrel. Our barrels are precision machined and cold hammer forged utilizing the highest quality materials at our state of the art facility in North Wales, PA. Exclusive to the Super Duty 14.5" Rifle is the brand new SSA-E X with Lightning Bow(R) trigger. This nanocoated, two-stage trigger features a wide body and bow shape that finds the perfect balance between a classic M4 trigger and a flat body trigger. At the heart of this rifle is the Geissele Reliability Enhanced Bolt Carrier Group. This Nanoweapon coated BCG features a properly torqued and staked, chrome lined gas key. The Cam Pin is machined from advanced, tool steel known as H13 which is also coated with Nanoweapon for maximum corrosion and wear resistance.- CALIBER .223 REM/5.56MM NATO- MAGAZINE (0) NO MAGAZINE IS INCLUDED- BARREL 14.5" Barrel, CHF, Chrome Lined, 1-7 Twist (Pin & Weld 16" OAL) - Geissele Profile, Nanocoated Surefire Closed-Tined Flash Hider- RECEIVERS Super Duty M4 Upper, Lower Mil-Spec- HANDGUARD 13.5" SMR MK16 w/ Geissele Center Tab- TRIGGER SSA-X w/ Lightning Bow- STOCK B5 Systems Enhanced Sopmod Stock