300 Blackout Black Anodized Pistol Upper Receiver Assembly 7.5″Barrel 7″ M-Lock Handguard


***The Barrel on this Upper Receiver Assembly Less than 16″ in Length and it is Legal to Use only on AR Pistol Lower Receivers and or NFA Registered Short Barrel Rifle Lower Receivers. Please Check National Firearm Act Laws Before Purchase

Our Goal is to make our Complete Uppers in Best Quality, Durable, Safe to Use, Light Weight, Good Looking, Reliable and Affordable

On Our Cerakoted Uppers We Use Only Our Own Custom Cerakoted Parts and they are 100% Color Matching



AR-15 Pistol Upper Receiver Assembly, 300Blackout, 7.5″ Pistol Length Barrel, 7″ Free Float M-Lock Super Slim Ultra Light Handguard

Specifications :


  • 7.5″ 4150 Chrome Moly Vanadium Steel Heavy Contour Barrel Profile , Black Nitride  Finish
  • 1:7 Twist, 5/8×24 Thread, 300 Blackout Caliber, Pistol Length Gas System

Upper Receiver

  • Forged 7075 T6 Aluminum , Hard Coat Black Anodized Finish
  • Precision machined to M4, M16 Specs
  • Forward Assist, Dust Cover, Shell Deflector, .250 Takedown Pin Holes, M4 Feed Ramps


  • 7” M-Lock Free Float  Scratch Resistance,  Picatinny Rails, Super Slim, Black Anodized Finish
  •  Made from Aircraft Grade High Quality Aluminum  In Durable Mil-Spec Style, Inside Diameter: 1.35”

Gas System

  • Direct Impingement
  • .750 Low Profile Steel Gas Block , 6.75″ Pistol  Length Stainless Steel Gas Tube 

Muzzle Brake

  • 308 Flash Can Muzzle Device
  • 5/8 x 24 TPI Thread, Length 2.5″ Outside Diameter 1- 1/8″″
  • This Muzzle Device will Forward Sound, Flash and Gases Away from Shooter and Bystanders, will Reduce Side Shock wave

Ambidextrous Charging Handle Included