20" Black Nitride 4150 Steel Government Barrel, 5.56 NATO, Rifle Length Gas - 428-B556RGVNT2017(M)
In stock
Here at AR15Discounts.com we work with a wide variety of machine shops and barrel manufacturers. When we come across a barrel maker we like, we will often decide to private label those barrels for resale under the NBS brand. We purchase these barrels in large quantities and then pass the savings on to our customers.
Why buy an NBS Brand Barrel:
- American Made – Sourced from a variety of Tier 1 Manufacturers here in the United States
- Quality Control – All barrels are manufactured under ISO-9001 or better quality standards
- MOA Guarantee – All barrels 16 and longer are guaranteed to hold 1 MOA or better using properly weighted match grade factory ammo and shooting from a rest.
- Hassle Free Returns
- Best Value for the Money
- NBS Limited Lifetime Warranty
| Weight | 35 oz |
|---|---|
| Dimensions | 22 × 3 × 3 in |
| Finish | Nitride / Melonite |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 20 |
| Gas System Length | Rifle |
| Platform | AR-15 |
| Twist Rate | 1-7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | 428-B556RGVNT2017(M) |
| UPC | 428-B556RGVNT2017(M) |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
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US
Very good deal
very good quality for the price, would buy again for another build
USAwesome
NBS 20inch barrel was awesome
USNBS 20" Black Nitride Government barrel 1/7 twist
Just put it together, have not fired it. Not a machine mark on it. Rifling is great and it comes with a guarantee of MOA with match ammo. Very happy
USFast, Accurate Personal Service
I received this barrel for an A2 build I am working on and was very impressed with the level of service and personal attention I received from AR15Discounts. A friend recommended the company to me and said he has always been very happy with their products and their service. He is a picky grumpy person with a lifetime of experience building and shooting ARs. If you guys made him happy you are in rare company. I have not used the barrel because I am waiting for the handguard to come back in stock.
US
As advertised
Bought this for my first at build. Shipped fast and installed easy. Would buy again.
