Complete 7.5" 5.56 Pistol Upper Receiver - FDE | FLASH CAN | 9" M-LOK | With BCG & CH

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Product Code: RTB75S55675RFC-FDE
MSRP: $494.95
Sale Price: Sale Price: $394.95
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Complete 7.5" 5.56 Pistol Upper Receiver | 9" M-LOK | With Bolt Carrier Group and Charging Handle - FDE

This Complete 7.5 inch M-LOK upper receiver comes with a 9 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 M4 barrel and our black nitride bolt carrier group that is finished with incredible polish, making the action smooth and easy to keep clean.

We also carry this Upper Receiver unassembled here if you are a DIYer / Do It Yourselfer.

Caliber 5.56
Length 7.5
Material 4150 Chrome Moly Vanadium
Profile Medium
Finish QPQ Corrosion Resistant
Gas System Length Pistol
Gas Block Journal .750"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 1/2x28 TPI
Weight 16.8oz
Barrel Extension M4 Feed Ramps
Target Crown 11 Degree


Bolt Carrier Group:

  • Enhanced 9310 Steel (Bolt)
  • 8620 Tool Steel (Carrier)
  • Bolt is shot Peened and MPI
  • All BCG components pre polished before being processed and then post polished for an incredible shine

Upper Receiver:

  • Machined from a Mil-Spec 7075 T6 Forging
  • FDE Cerakoat
  • M4 Feed ramps


  • 9" Lightweight - Free Float M-LOK
  • FDE Cerakote

Charging Handle:

  • Forged 7075 Aluminum construction
  • FDE Cerakote
Please Note: Uppers may present light fouling from our quality control process and/or test firing

***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***