NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit
Save 53% MSRP: $149.95 Original price was: $124.85.$69.95Current price is: $69.95.
In stock
NBS SOPMOD Mil-Spec Adjustable AR-15 Stock w/ Battery Storage – Black
Designed to fit MILSPEC buffer tubes. The NBS SOPMOD stock features an excellent cheekweld for optimum shooting positioning. Within the buttstocks frame are two water tight storage compartments for small items. The rubber butt pad provides a non-slip surface for consistent shoulder and cheek placement.
- Mil-Spec buttstock for AR15 and other models
- Rubber non-slip butt pad
- Two watertight storage compartments
- Stainless steel QD swivel mount
- Made in the USA
Surplus Complete Lower Parts Kit
The Surplus complete lower parts kit is a mil-spec or better LPK with well-machined components.
Technical Specs
- 31 piece set to complete a lower.
- Machined parts, no MIM.
- Hammer 8620 Steel
- Trigger 8620 Steel
- Disconnector 4340 Steel
- Trigger Pin 4140 Steel
- Bolt Catch 4340 Steel
- Polymer Pistol Grip
Mil-Spec Carbine Buffer / Receiver Extension Kit
The AR Receiver Extension Kit is constructed from aircraft grade aluminum with rolled threading. The buffer tube has been hard coat anodized for maximum corrosion and wear resistance. A standard buffer spring and 3oz carbine buffer are included as well as a castle nut and lower receiver end plate.
This assembly kit will fit on all Mil-Spec AR-15 lower receivers.
- Mil-Spec Carbine Buffer Tube / Receiver Extension
- 6 Position Aircraft Grade Aluminum
-
Carbine Buffer Spring
-
Castle Nut/Receiver Nut
-
Mil-Spec Receiver End Plate
-
Carbine Recoil Buffer
- Anti-rotation buffer retaining tabs may vary (depending on batch)
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 | 30 oz |
|---|---|
| Dimensions | 7.5 × 2.5 × 5 in |
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
US
Great kit.
Haven't installed it yet, but looks like it will right for the job!
USWould have been 5 stars, but was missing a part.
Kit came as advertised, How ever my kit came with two disconnectors and was missing the mag release latch, button and spring was included. The all metal parts matched color wise, versus other kits I've used that had variations in color.
AR15Discounts.com
Thank you for your feedback—we’re glad to hear the kit arrived as expected overall and that the parts matched well in color. We’re sorry to hear that the magazine release latch was missing from your kit. That’s certainly not the experience we want for our customers. If you haven’t already reached out to our customer service team, please feel free to contact us at [email protected] , and we’ll be happy to help get the missing part taken care of. -JH
USDecent for the price
Not a fan of the **** in the pistol grip, and my mag catch won’t stay open, not sure if it’s because I’m using a Ambidextrous lower but I’m gonna get a stiffer spring or all new bolt catch internals but not bad for my first ar build.
USOk but…
I bought two of these kits for builds and the magazine catches in BOTH kits are NOT made to spec. Neither mag catch worked in either of the two Aero lowers I have. I had bought a Dirty Bird parts kit for another Aero lower I had (EPC9) and that mag catch worked perfectly in the Aero AR15 lowers. All other parts in the kit are suitable. Just know your mag catch probably won’t work.
