KAK Complete AR15 Upper Receiver – 7.62×39 – 16″ Barrel – 13″ MLOK


KAK Brand AR-15 7.62×39 16″ complete upper

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product description


  • Barrel Length- 16”

  • Barrel Material- 41V50 Button Rifled Barrel

  • Chamber 7.62x39

  • Twist Rate 1:9.5

  • Muzzle Device Milspec A2 birdcage 5/8-24

  • Extension- M4

  • Gas System- Carbine length

  • Gas Block- Low profile .750 Nitride Finish

  • Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec

  • Handguard- 13”, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut

BCG (Milspec BCG by default, K-SPEC Upgrade available)

  • M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, BlackNitride Finish by H&M

  • 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

  • Nitride Cam Pin

  • S7 tool steel ejector and extractor retaining pin

  • 4130 Gas Key, nitride, precision staked using our hydraulic staking machine

  • KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated