Geissele Automatics Super Duty AR-15 Barreled Upper Receiver 5.56 Carbine - Black - No Muzzle Device - 10.3"

Manufactured by Geissele Automatics
SKU: 08-244B
MPN: 08-244B
Manufactured by Geissele Automatics
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Standard orders will ship out within 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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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.

The Geissele Super Duty Barreled Upper Receiver Group offers the latest in weapon technology available. This upper is the total package with unrivaled strength, reliability and durability allowing you to confidently navigate any scenario. It is a complete 10.3-inch mil-spec upper receiver chambered in 5.56mm. The barrel is precision machined and cold hammer forged utilizing CMV steel providing the highest quality and unrivaled durability. The carbine length gas tube and Geissele super compact gas block with bomb-proof installation ensures reliability and optimal performance in all conditions. It boasts an MK16 9.5-inch, 6061-T6 aluminum handguard treated with type III hard coat anodized finish to ensure it can withstand the most severe abuse and provide maximum corrosion resistance. This stripped upper receiver checks all the boxes with M4 feed ramps, 7075-T6 aluminum, type III hard coat anodized, cold hammer forged in a 1:7 twist and a medium profile. The Super Duty 10.3" AR-15 Barreled Upper Receiver Group is designed specifically for law enforcement. It represents a highly dependable, quality manufactured and assembled upper at a price point that is affordable.

  • Manufactured by Geissele Automatics
  • 5.56mm 
  • Black finish
  • Government profile
  • 1:7 twist
  • Made in the USA
  • Mil-Spec upper receiver
  • M4 feed ramps 
  • 7075-T6 aluminum
  • 10.3" CMV steel barrel
  • 9.5” handguard
  • Geissele length, “Bombproof” super gas block
  • Type III hard coat anodize

Geissele Automatics manufactures confidence, offering quality triggers and components for the warfighter and competitor. They were established in 2004 with the mission to build the highest quality, reliable triggers for competition and their first trigger, the Hi-Speed National Match trigger, was so popular that they were asked by the Department of Defense to produce a select-fire trigger for the United States Special Operations. Again, it was a success and Geissele decided to bring a semi-automatic version to the civilian market for law enforcement and personal protection.
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Barrel CoatingSalt Bath Nitride
Barrel ContourMedium
Barrel Length10.3
Barrel LiningChrome
BrandGeissele Automatics
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard9.5 in SMR MK16
Muzzle DeviceBare Muzzle
Thread Pattern1/2 X 28
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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