Geissele Super Duty AR-15 Barreled Upper Receiver 5.56 Mid-Length – Iridium – No Muzzle Device – 14.5″


  • Forged 7075-T6 aluminum receiver
  • Black Oxide barrel
  • 14.5” cold hammer forged barrel
  • Chambered in 5.56 with a mid-length gas system
  • Threaded 1/2×28
  • 14” SMR MK16 free float M-LOK handguard
  • Iridium Finish



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SKU08-246IDM Category

NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR-15 pistols or legal short-barreled rifles. Other configurations may violate Federal law.

This top-of-the-line upper receiver assembly features a 14.5” cold hammer forged barrel with a mid-length gas system for smooth and reliable function. The barrel also sports a black Oxide coating, and does not come with a muzzle device – allowing you to choose the perfect muzzle device for your needs. The upper receiver is forged from 7075-T6 aluminum and finished in an eye catching Iridium color. The free float handguard is a full 14” SMR MK16 model, with M-LOK attachment slots on 7 sides – giving you plenty of room to customize your set up. This barreled upper receiver group does not come with a bolt carrier group or charging handle.


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