Geissele Automatics Super Duty Complete Upper Receiver - DDC - 10.3"

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 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 the 10.3" CMV steel providing the highest quality and unrivaled durability. It features a Tier 1 mil-spec bolt carrier group constructed from pure Carpenter 158+ steel making the bolt stronger and more fatigue resistant. 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 SMR MK16 9.3-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.

• Manufactured by Geissele Automatics
• 5.56mm
• Mil-Spec upper receiver
• M4 feed ramps 
• 7075-T6 aluminum
• Mil-Spec A2 flash hider
• 10.3" CMV steel barrel
• 1-7 twist
• Government profile
• Carbine length gas system
• SMR MK16 9.3" M-LOK handguard 
• Type III hard coat anodize desert dirt
• Airborne charging handle
• SureFire Closed Tine Warcomp
• Tier 1 Mil-Spec BCG, 158 Carpenter steel

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.