Complete Upper Receiver - 9mm - 16" Barrel- 15" MLOK

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Upper Receiver Group

  • Barrel Length- 16”
  • Barrel Material- 41V50 Button Rifled Barrel
  • Chamber 9MM NATO
  • Twist Rate 1:10
  • Muzzle Device Milspec A2 birdcage 1/2-36
  • Gas System- Blowback 
  • Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
  • Handguard- 15”, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
  • Charging Handle- Milspec with Enhanced Large Billet Latch
  • BCG
  • One piece BCG
  • Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, BlackNitride Finish by H&M
  • Firing pin is machined from 8740, precision ground, and chrome plated
  • One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
  • S7 tool steel ejector and extractor retaining pin
  • 4130 Gas Key, nitride, precision staked using our hydraulic staking machine
  • Carrier key screws- Grade 8, Properly Heat Treated and staked
  • Weighted 1 Piece BCG, works with all types of hammers, compatible with Colt and Glock Style Magazines


All KAK complete upper receivers are test fired for feed and function using commercially loaded ammunition



  • 5

    Posted by Jawan Bullock on January 18, 2024

    I have nothing bad to say about this upper works perfect!!!