Geissele Super Duty AR-15 Barreled Upper Receiver 5.56 Mid-Length – 40mm Green – 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
  • 40mm Green Finish


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SKU08-246-40G 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 bad boy comes with a 14.5” cold hammer forged barrel with a mid-length gas system for reliable function – meaning you can count on it in any situation. Plus, the black oxide coating on the barrel looks great and ensures your upper receiver assembly will last through many rounds of use. And since it doesn’t come with a muzzle device, you can choose the one that best fits your needs. The upper receiver is forged from 7075-T6 aluminum and finished in eye catching green, making it a real stand out at the range. Plus, the Iridium 14” SMR MK16 free float handguard provides ample room to add any additional accessories you might want via the M-LOK attachment slots on 7 sides. Please note this product does not include a bolt carrier group or charging handle.


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