Geissele Super Duty AR-15 Complete Upper Receiver 5.56 Mid-Length – Iridium – 16″


  • Forged 7075-T6 aluminum receiver
  • 16” cold hammer-forged chrome lined barrel
  • Chambered in 5.56 with a mid-length gas system
  • SureFire Closed Tine flash hider
  • 15” SMR MK16 free float M-LOK handguard
  • Airborne charging handle
  • Nano coated BCG
  • Iridium Finish


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SKU08-220IDM Category

The Geissele Super Duty Complete Upper Receiver is the perfect choice for your next AR-15 build. This complete upper chambered in 5.56mm features a Nanoweapon coated Surefire Closed-Tine Flash Hider mounted to a 16” durable black oxide coated, CHF, Chrome Lined 1-7 twist barrel. The mid-length gas tube and Geissele Super Compact Gas Block with bomb-proof installation ensure 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.


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