NBS 16″ Slick Side Billet 9mm SOCOM M-LOK Rifle Kit
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NBS 16″ Slick Side Billet 9mm SOCOM 1:10 M-LOK Upper Assembly
An affordable pistol upper assembly without cutting corners. This means using quality American Made handguards, paired with a 16″ 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 | 16″ 9mm 1:10 Twist Pistol Length Nitride |
| Handguard | NBS M-LOK Free Float Handguard – American Made – Extruded 6061 Aluminum |
| Muzzle Device | Ballistic Advantage 9mm A2 Flash Hider – 1/2×36 |
NBS 9mm Bolt Carrier Group – Black Nitride
If you are looking to build a 9mm Rifle, then this NBS 9MM BCG is exactly what you will need to ensure smooth cycling. Our bolts come ramped and in a smooth black nitride finish to ensure longevity.The NBS 9mm BCG is designed to work with Glock style AR9’s. These are also tungsten weighted to proper spec for reliable and safe use.Â
*Incompatibilities exist with Colt magwell adapters and QC10 lowers*
*Endomag 9mm inserts may require minor modification per Mean Arms break-in procedure for ideal function*
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Machined from 8620 Steel
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QPQ Black Nitride Finish
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Compatible with GLOCK Magazines
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Ramped bolt for a standard AR-15 hammer
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Features removable weight
NBS Enhanced AR-15 Mil-Spec Charging Handle
Surplus 5.56/.223 Lower Parts Kit includes:
Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch spring Buffer, Retainer, Buffer Retainer spring Disconnect, Disconnect spring Hammer (black or silver in color), Hammer Pin, Hammer spring Magazine Catch, Magazine Catch Button, Magazine Catch spring Pistol Grip (A2 style), Pistol Grip Lock Washer, Pistol Grip Screw, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent spring Selector, Selector Detent, Selector Detent spring Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent spring Trigger (black or silver in color), Trigger Guard, Trigger Guard Roll Pin, Trigger Pin, Trigger Spring
M4 Style Stock
Dirty Bird PCC (9mm / .45) Receiver Extension / Buffer Kit.
The Dirty Bird PCC (9mm / .45) Receiver Extension / Buffer Kit cuts no corners. It features a true Mil-Spec 6-Position Receiver Extension (buffer tube) machined from American Made 7075-T6 Aluminum, 8oz 9mm / .45 Extended Solid Recoil Buffer – no sliding weights, a chrome silicon buffer spring, hardened castle nut with staking cuts and mil-spec end plate.
When it comes to your buffer system, quality counts. If the spring rate isn’t correct, it can cause cycling issues. Poor quality aluminum can lead to a fracture in the receiver extension. Unfortunately, there are a ton of receiver extension / buffer kits on the market (import AND domestic) that suffer from one or all of these shortcuts in the manufacturing process.
You have Dirty Bird’s word that this kit is made from the finest materials, using modern manufacturing processes. If you’re looking for true mil-spec quality, don’t pay more, don’t settle for less; this is your kit.
Includes:
- 7075-T6 Aluminum 6-Position Mil-Spec Receiver Extension (7075-T6 Aluminum is nearly twice as strong as 6061)
- 8oz 9mm / .45 Extended Solid Recoil Buffer – no sliding weights
- Hardened Castle Nut w/ Staking Cuts
- Mil-Spec End Plate
Made in the USA
NBS — Our In-House Brand for Builders Who Demand Reliable Performance and Real Value.
Designed for builders who demand reliable performance and real value without unnecessary hype or inflated pricing. NBS stands for "No Bullshit."
Built on Strong Industry Partnerships
Through the strong partnerships AR15Discounts has built with trusted suppliers and vendors, we regularly gain access to premium components often manufactured by or for leading industry names. By purchasing these in volume, we bring them to you under the NBS label, ensuring proven quality reaches your build at a fair price, without the added cost of extensive marketing.
Quality You Can Trust
Every NBS product is specified to the exacting standards we apply to our own rifles. Each component features precision CNC machining, American-made key components where it counts, robust materials, dependable steels, and durable finishes engineered for long-term reliability. These items are either sourced from reputable OEMs or carefully assembled in-house using established name-brand elements, maintaining consistent excellence throughout the lineup.
Complete Solutions for Serious Builders
From stripped and complete uppers to bolt carrier groups, handguards, lower parts kits, and beyond, NBS provides a unified, affordable selection that allows you to complete confident, high-performing builds.
Backed by a Limited Lifetime Warranty
All NBS products come with our Limited Lifetime Warranty for the original owner, covering defects in materials and workmanship. AR15Discounts stands firmly behind these parts because, as shooters ourselves, we use and trust them, delivering honest value and gear you can rely on.
| Weight | 64 oz |
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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.
