product code:08-217S



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The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 11.5 complete upper chambered in 5.56mm features a Nanoweapon coated Surefire 3-Prong Flash Hider mounted to an 11.5 Mag Phosphated, CHF, Chrome Lined 1-7 twist 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. The carbine length gas tube and Geissele Super Compact Gas Block with bomb-proof installation ensures reliability and optimal performance in extreme conditions.

Included is a brand new, 10.5 Super Modular Rail MK16 that mates to the upper via a center aligning tab removing any chance of rail rotation. This rail is a variant of the 13.5 SMR MK16, currently fielded by USASOC and renowned by operators for their performance and comfort.

Also included is the Geissele REBCG, Reliability Enhanced Bolt Carrier Group. This Nanoweapon coated BCG is machined from mil-spec 8620 steel, with a properly torqued and staked, chrome lined gas key. The Cam Pin is machined from advanced, medical steel known as H13 which is also coated with Nanoweapon for maximum corrosion and wear resistance. The REBCG also features extended upper rails, providing greater stability and dramatically increasing feeding reliability.

The National Firearms Act regulates the configurations of some firearms assembled with barrels under 16in long. Know the NFA laws in your state before purchasing this item.

LENGTH 10.3"
CALIBER 5.56mm
RECEIVER Super Duty Upper w/ cam Pin cut-out
BOLT CARRIER GROUP Nanoweapon Reliability Enhanced BCG
BOLT Geissele Stressproof Bolt with Asymmetric Cam Pin
RAIL 9.3" SMR MK16
BARREL 10.3" Geissele Barrel, CHF, Chrome

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