Complete AR15 Upper Receiver- 300 Blackout, 6.25" 416r Barrel, 5.5" MLOK

Complete AR15 Upper Receiver- 300 Blackout, 6.25" 416r Barrel, 5.5" MLOK

SKU:
MO-452-1010-029
$669.95
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Description

Upper

  • Barrel- 6.25” Baby Blonde Barrel
  • Barrel Material- 416 5R Stainless
  • Chamber 300 BLK
  • Twist Rate 1:7
  • Muzzle Device Milspec A2 birdcage 5/8-24
  • Extension- M4
  • Gas System- Pistol length
  • Gas Block- Low profile .750 Phosphate Finish
  • Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
  • Handguard- 5.5”, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
  • KAK charging handle with oversized billet latch

BCG

  • M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, chrome lined phosphate comes standard
  • 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 and staked

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

Note- If you select an adjustable gas block to be added to this upper it will ship with a thread protector, we suggest using shims or accuwashers to time your muzzle device as the adjustment screw for the gas block is in close proximity to the muzzle.

Additional Information
Caliber:
300 Blackout