Geissele Super Duty MOD1 Complete Upper Receiver 15" SMR MK16 5.56 - HUXWRX Flash Hider QD 556 - Desert Dirt Color

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Geissele Automatics, Super Duty MOD1 - Complete Upper Receiver - 556NATO - 16" Barrel - 1:7 Twist -HUXWRX Flash Hider-QD 556

The Geissele Super Duty MOD1 Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 16” complete upper chambered in 5.56mm features a nanoweapon-coated HUXWRX Flash Hider-QD muzzle device mounted to an 16” Manganese Phosphate coated, 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 Geissele length gas system and Geissele Super Compact Gas Block with bomb-proof installation ensures reliability and optimal performance in extreme conditions.

Included is a brand new, 15” 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.

Included 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, medical steel known as H13 which is also coated with Nanoweapon for maximum corrosion and wear resistance.

Specs & Features: 

  • OVERALL LENGTH: 25 3/8"
  • WEIGHT: 4 lbs 5 oz
  • 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: 15" SMR MK16
  • BARREL: 16" Geissele Barrel, CHF, Chrome Lined, 1-7 Twist - Geissele Profile
  • GAS SYSTEM: Geissele Length
  • GAS BLOCK: Super Compact Gas Block
  • GAS PORT SIZE: .075"
  • CHARGING HANDLE: Airborne Charging Handle
  • MUZZLE: HUXWRX Flash Hider-QD 556
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