NBS 7.5" Slick Side Billet 5.56 Nitride Pistol M-LOK Upper Assembly
In stock
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 7.5″ Nitride treated barrel chambered in 5.56 NATO.
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 Slick Side Billet Upper – 6061 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | 7.5″ 5.56 NATO 1:7 Twist Pistol Length Nitride |
| Gas System | Pistol Length – APOC Armory Nitrided Steel Gas Block – Stainless Steel Pistol Length Gas Tube |
| Handguard | M-LOK Free Float Handguard (style may vary due to availability) – American Made – Extruded 6061 Aluminum |
| Muzzle Device | Mil-Spec A2 Birdcage w/ Jet Black Nitride Finish |
| Weight | 35.008 oz |
|---|---|
| Dimensions | 19.5 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | Medium |
| Cartridge Compatibility | 5.56 NATO |
| Barrel Length | 7.5 |
| Gas System Length | Pistol |
| Twist Rate | 1-7 |
| BCG / Charging Handle | Not Included |
| UPC | 3127 |
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.
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United States
NBS 7.5 Upper
It was exciting to get to build off a small barrel like this. Guns are fun to shoot, and this is no exception. Maybe I will come back to this review a year later but in the meantime, it’s great! I’ve put ~100rds so far. I look forward to make this a great small rifle.
USGlad I found this.
This is a well made upper. I like it a lot. Like any firearm, always use ear pro!
USAwesome upper!
Wish I woulda got more when on sale. But oh well order another just cause the first one came out better then I thought. Will definitely buy more when they are on sale lol I would recommend.
USShoulda got more lol
Package come in nice and wrap up. Better than expected when received. Was very happy. Item was on sale and wish I woulda bought another one. Was not disappointed.
USTop Gear from A Top Company
Shipping was fast, service was excellent, the support team is there to answer your questions! So far I have cycled 200 rounds with no jams or problems. Only problem I have is I wish I had bought 2 instead of one!
