Builder's Grade 4.5" 9mm Upper Receiver - Black | FLASH CAN | 4" M-LOK | With Bolt Carrier Group and Charging Handle
This 4.5 inch M-LOK upper receiver comes with a 4 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel making the action smooth and easy to keep clean.
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:
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
- Type III Hardcoat Anodized finish
Handguard:
- 4" free-float handguard
- MIL-STD 1913 Picatinny rail on top
- 1 M-Lok slot 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 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.***