Complete AR15 Upper Receiver- 300 Blackout, 9" 416r Barrel 7.2" MLOK

Complete AR15 Upper Receiver- 300 Blackout, 9" 416r Barrel 7.2" MLOK

SKU:
MO-452-1010-052-A
$669.95
(1 review)
Current Stock:
Description

Upper

  • Barrel- 9” Mr. Blonde
  • 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- 7.2”, 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

Additional Information
Caliber:
300 Blackout

Reviews

  • 5
    9inch 300blackout Mr. Blonde

    Posted by Stephen on March 28, 2025

    Craftsmanship is top notch and looks awesome. Shoots like a dream with a kak lower. Absolutely best bang for your buck and amazing customer service which made customizing it from the factory to easy. Thanks guys!