Complete AR15 Upper Receiver - 5.56 - 18" Barrel, Mid Gas - 15" MLOK

Complete AR15 Upper Receiver - 5.56 - 18" Barrel, Mid Gas - 15" MLOK

SKU:
MO-450-1010-007-A
$451.95
(1 review)
Current Stock:
Description

Upper

  • Barrel Length-18”
  • Barrel Material- 41V50 Button Rifled Barrel, Nitride 
  • Chamber- 5.56 NATO
  • Twist Rate- 1:7
  • Muzzle Device Milspec A2 birdcage 
  • Extension- M4
  • Gas System- Mid 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
  • Weight- 4.6#

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

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

Additional Information
Caliber:
5.56
Platform:
AR15
Tags:
Length:
18"
Finish:
Nitride

Reviews

  • 5
    Excellent Upper For The Price

    Posted by Braeden on September 17, 2025

    About a year and a half ago, I purchased this upper as my first AR and have had little issue in the close to 2k rounds I've ran through it. Fed Winchester M193, PMC Xtac M193, and a very steady diet of AAC 55gr and will stack rounds no problem at 50 yards. I had issues with 1st Round Ammo commercial reloads, like to double feed, failure to feed, and failure to eject, definitely the ammo and not the gun. Runs well with a CMMG .22lr conversion kit, tons of fun.