Dirty Bird Brand AR-15 Parts
Description
You’re looking at the NBS 4″ 9mm Medium Profile QPQ Nitride Barrel. We sell hundreds of varieties of barrels from many top manufacturers and the ones we like the most end up as NBS barrels. We buy these in large quantities and re-brand them so we can bring them to our loyal customers at a fraction of the cost.
These 4″ 9mm Barrels feature a Medium profile and have been cut from high quality 4150 Green Mountain Rifle barrel blanks and are machined to have a generous feed cone which ensures consistent feeding and further enhances reliability. The barrels are then finished with a uniform jet black QPQ Nitride finish for easy cleaning, corrosion resistance and extended service life.
NOTE: Because blowback / pcc barrels do not have a barrel extension, you will consider this barrel 3.5″ long when measuring for a handguard.
These barrels do not have an indexing pin.
The best 9mm barrels for the money
Made in the USA
Backed by the NBS Limited Lifetime Warranty and the AR15Discouns.com Satisfaction Guarantee
Additional information
| 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 |
| MPN | 3147 |
| 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.
