Builder's Grade 6" 300 BLK Upper Receiver | A2 | 5.5" Slant Cut M-LOK - Black Anodized
This 6 inch M-LOK upper receiver comes with a 5.5 inch free float handguard that has a slant cut design and is built with only the best Mil-Spec components. The heart of this upper is comprised of a precision 4150 Chrome Moly Vanadium barrel.
| Barrel | Specifications |
|---|---|
| Caliber | 300BLK |
| Length | 6" |
| Material | 4150 Chrome Moly Vanadium |
| Profile | Medium |
| Finish | QPQ Corrosion Resistant |
| Gas System Length | Pistol |
| Gas Block Journal | .750" |
| Dimpled? | Yes |
| Twist Rate | 1:7 |
| Muzzle Thread | 5/8x24 TPI |
| Weight | 14oz |
| Barrel Extension | M4 Feed Ramps |
| Target Crown | 11 Degree |
Upper Receiver:
- Machined from a Mil-Spec 7075 T6 forging Hard Coat Anodized per Mil-A-8625F, Type III
- M4 Feed ramps
- Made in the U.S.A.
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
- Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
- Clamp on system for easy assembly
- Steel Barrel nut to resist movement under heat
- 8.8 oz with barrel nut and hardware
- 1.35" Inside Diameter
- 1.65" Wide
- Made in 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.***
All NFA/ATF Rules Apply
Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.
