Dirty Bird Brand AR-15 Parts
NBS 4" Slick Side Billet 9mm Nitride Pistol M-LOK Upper Assembly
Only 2 left in stock
Description
An affordable pistol upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum and quality American Made handguards, paired with a 4″ Nitride treated barrel chambered in 9mm.
This also means taking the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.
Bottom line is this: you hear all the time about guys buying a budget upper and it not lasting or having to send it back because of some hardware defect or other issue caused by a careless assembly process. That is why we use quality components and assemble each unit to the highest standard of quality. We want your upper to function flawlessly out of the box. In fact, we guarantee it will.
Lifetime Warranty
| Upper Receiver | NBS AR-9 Slick Side Billet Upper – 6061 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | 4″ 9mm 1:10 Twist Pistol Length Nitride |
| Handguard | NBS M-LOK Free Float Handguard – American Made – Extruded 6061 Aluminum |
| Muzzle Device | KAK Slimline Micro Flash Can – 1/2×36 |
Additional information
| Weight | 13.6 oz |
|---|---|
| Dimensions | 16 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | Medium |
| Gas System Length | N/A |
| Barrel Length (inches) | 4 |
| Barrel Chamber | 9mm |
| Twist Rate | |
| BCG / Charging Handle | Not Included |
| UPC | 4326 |
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.
