RTB 8.3" 9mm Upper Receiver - Black | Fluted Comp | 9" M-LOK | Without BCG & CH

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Product Code: RTB-BU8.3-9MM
MSRP: $299.95
Sale Price: Sale Price: $249.95
$249.95
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RTB Barreled 8.3" 9mm Upper Receiver | FLASH CAN | 9" M-LOK

NO BCG OR CHARGING HANDLE INCLUDED

This Barreled 8.3 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.



Barrel
Specifications
Caliber 9mm
Length 8.3"
Material 4150 Chrome Moly Vanadium
Profile Straight
Finish QPQ Corrosion Resistant
Gas System Length Blowback
Dimpled? No
Twist Rate 1:10
Muzzle Thread 1/2x36
Weight 13.8oz


Upper Receiver:

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


Handguard:

  • MATERIAL: HARD COAT ANODIZED/CERAKOTED ALUMINUM HANDGUARD, ALUMINUM BARREL NUT
  • PRECISION BORE
  • ACCEPTS M-LOK RAIL SECTIONS & ACCESSORIES
  • 7075-T6 BARREL NUT
  • RAIL LENGTH IS MEASURED ALONG THE TOP
  • INNER DIAMETER: 1.36"
SKU:
RTB-BU8.3-9MM