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

Builder's Grade 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:

• Length - 4.5"
• Material - 4150 Chrome Moly Vanadium
• Profile - Straight
• Finish - QPQ Corrosion Resistant
• Gas System Length - None
• Gas Block Journal - N/A
• Twist Rate - 1:10 inches
• Muzzle - 1/2x36 Threaded
• Weight - 8.3oz

Upper Receiver:

This .22LR / 9mm upper receiver assembly is made from forged 7075-T6 aluminum and is Hard Coat Anodized. It meets military specifications and comes in a true slick side configuration. The ejection port door is sized for 9mm and 22LR. This upper does not have a shell deflector, nor does it have a forward assist.

• 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 aircraft grade 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.***