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
- Best Value for the Money
| Weight | 7.1 oz |
|---|---|
| Dimensions | 6 × 3 × 3 in |
| Finish | Nitride / Melonite |
| Barrel Profile | Medium |
| Cartridge Compatibility | 9×19/9mm |
| Gas Block Journal | None |
| Barrel Length | 4 |
| Gas System Length | Blowback |
| Platform | AR-15 |
| Twist Rate | 1-10 |
| Muzzle Thread Pattern | 1/2×28 |
| UPC | 3147 |
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
- Reviews
- Questions
- price
- quality
- blast diffuser
- Excellent
- Money
- KAK Slimline Micro
- penny
- flaws
- upper
- barrel
US
NBS 4 inch
Just what I was looking for, perfect fit. Flush with my hand guard.
USWorks as it should nice short barrel.
No flaws put about 20 rounds through it just to try it out 👍
US
Quality affordable option
I was in the market for parts to build a really compact 9mm upper without spending much money. A KAK Slimline Micro blast diffuser on this barrel just reaches past the end of a 4 inch handguard. I'm quite happy with the quality and the price.
USExcellent- outstanding service
Excellent, couldn’t ask for better customer service. Couldn’t ask for better shipping. Products were as advertised, packaged well and quality.
USExcellent fit!
Very nice for the price, worth every penny...
