Complete AR15 Upper Receiver- 5.56, 16" Barrel, Rifle Gas, 15" MLOK

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  • Barrel Length-16”
  • Barrel Material- 41V50 Button Rifled Barrel
  • Chamber 5.56 NATO
  • Twist Rate 1:7
  • Muzzle Device Milspec A2 birdcage 
  • Extension- M4
  • Gas System- Rifle Length
  • Gas Block- Low profile .750 Phosphate Finish
  • 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 (Standard Chrome Phosphate BCG by default, Upgrades available)

  • M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection
  • Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
  • Firing pin is machined to the mil-spec print 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, precision staked using our hydraulic staking machine
  • KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated

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



  • 5
    Modern dissipator

    Posted by Kodee Howell on July 1, 2024

    Well built upper. Handguard feels really solid. Customer service is awesome, I’m an idiot and they answered all my questions immediately. Highly recommend.