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4.5" 9mm Upper Receiver -Black | FLASH CAN | 5.5" M-LOK Slant Cut | Without BCG & CH

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Product Code: RTB459MM55
List Price: $384.95
MSRP: $384.95
Sale Price: Sale Price: $172.95
Savings: $212.00
$172.95
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Out of stock

Barreled 4.5" 9mm Upper Receiver | FLASH CAN | 5.5" M-LOK Slant Cut | Without Bolt Carrier Group and Charging Handle

NO BCG OR CHARGING HANDLE INCLUDED

Click here for Charging Handles

Click here for Bolt Carrier Groups

This Barreled 4.5 inch M-LOK upper receiver comes with a 5.5 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.


Barrel
Specifications
Caliber 9mm
Length 4.5
Material 4150 Chrome Moly Vanadium
Profile Straight
Finish QPQ Corrosion Resistant
Gas System Length None
Gas Block Journal N/A
Dimpled? No
Twist Rate 1:10
Muzzle Thread 1/2x36 TPI
Weight 8.3oz
Barrel Extension Integrated
Target Crown 11 Degree


Upper Receiver:

  • Machined from a Mil-Spec 7075 T6 Forging
  • Black Anodization


Handguard:

  • 5.5" free-float handguard
  • MIL-STD 1913 Picatinny rail on top
  • 2 M-Lok slots on 3 sides
  • Precision Machined 6000 Series aluminum, for high strength and weight savings
  • Clamp-on system for easy assembly
  • Steel Barrel nut to resist movement under heat
  • Made in the USA
***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***
SKU:
RTB459MM55