Complete AR15 Upper Receiver - 300 Blackout - 13.9" Barrel - 13" MLOK - 4 Prong Pin and Weld

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  • Barrel Length- 13.9” Pinned and Welded (16" OAL)
  • Barrel Material- 41V50 Button Rifled Barrel
  • Chamber 300 BLK
  • Twist Rate 1:7
  • Muzzle Device- KAK 4 Prong Flash Hider 5/8-24 (Pinned and Welded)
  • Extension- M4
  • Gas System- Carbine length
  • Gas Block- Low profile .750 Phosphate 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
  • Charging Handle- Milspec with Enhanced Large Billet Latch


  • 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, nitride, precision staked using our hydraulic staking machine
  • KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated and staked
300 Blackout
Pin and Weld:
Permanently attached muzzle device