NBS Gun Parts
(20 deals total)

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6 days ago
- Machined from Carpenter Technology No. 158 alloy. - Heat treated - Shot peened per ASTM B851/SAE AMS2430S - Individually High Pressure Tested (test fired) - Individually Magnetic Particle Inspected - Manganese Phosphate Finish Extractor - Tool Steel Extractor - Manganese Phosphate Finish - Mil-Spec O-Ring Carrier - Machined from AISI 8620 aircraft qualty alloy per ASTM A108/A322-13 - Full Mass M16 Profile - Stress Relieved - Hard Chrome Bore Gas Key - Machined from 4130 chromoly steel alloy per ASTM A108/A322-13 - Grade 8 Hardware - Properly Staked - Hard Chrome Internal
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1 week ago
SKU: NBS-CU-16-GOV-MID A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a nitrided steel gas block as opposed to phosphate or aluminum, quality American Made M-LOK handguards and one of the nicest nitrided A2s you’ll find anywhere. 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.
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1 week ago
Description An affordable 9×39 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 8.5″ 416R Stainless Steel Barrel chambered in 9×39, which is perfect for running suppressed. This often subsonic round is new to the American market and is perfect for home-defense, or for a truly unique build/0
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1 week ago
Description An affordable 9×39 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 8.5″ 416R Stainless Steel Barrel chambered in 9×39, which is perfect for running suppressed. This often subsonic round is new to the American market and is perfect for home-defense, or for a truly unique build/0
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2 weeks ago
Description - Mil-Spec Carbine Buffer Tube / Receiver Extension - 6 Position - 7075-T6 Aircraft Grade Aluminum - Hard Anodized - Carbine Buffer Spring - Castle Nut/Receiver Nut - Mil-Spec Receiver End Plate - Carbine Recoil Buffer (Colors may vary) - Lifetime Warranty Provided by AR-15Discounts.com - American Made! Additional information Weight 0.0000 oz MPN AM-21-BUF FER-KIT Title Default Title Reviews Customer Reviews
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2 weeks ago
SKU: 3524 The NBS AR-9 Billet Upper Receiver is a quality, American made billet upper designed to be used on Pistol Caliber Carbine (PCC) builds. Most often PCC builds are either 9mm or .45 ACP. This billet upper features a unique design that sets it apart from traditional forged upper receivers. Manufactured to exacting standards on five axis CNC machines from a solid block of aircraft grade aluminum, this stripped upper not only looks good… it is built to last. No Feedramps Compatible with mil-spec forged lower receivers and most billet lower receivers .250 takedown / pivot pin holes
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3 weeks ago
Looking for a top quality Upper Receiver at wholesale prices? The NBS AR-15 Stripped Upper machined by one of the foremost manufacturers of mil-spec AR-15 components in America. Normally these stripped uppers are only available to builders when purchased from a name brand at a substantial markup, but we’re making these available at wholesale prices. What makes this upper different from other “Mil-Spec” upper receivers? Machined from top tier forgings.
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1 month ago
Description The NBS Billet AR-10 / LR308 Extended Latch Charging Handle starts with an improved mil-spec style handle machined from 6061-T6 Billet Aluminum. We find that billet gives us a more rigid handle and we don’t have to worry about inconsistent forgings. Rapid, single handed charging using the support hand tends to produce off-axis stress, this makes rigidity one of the most important attributes of a charging handle. The extended latch is also machined from billet aluminum and features grip enhancing serrations for positive grip in adverse conditions.
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1 month ago
We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. The NBS 20″ 5.56 Rifle M-LOK Upper Assembly, is a great all around upper, especially for hunting or long-range target practice. With higher velocity and a longer sight radius with this 20″ barrel, we wanted to make sure that any shooter could take this out and shoot long distances, reliably. This upper features a 20″ NBS Government Contour barrel chambered in 5.56 with a 1:7 twist and a rifle gas system.
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2 months ago
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.
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2 months ago
Here at AR15Discounts.com we work with a wide variety of machine shops and barrel manufacturers. When we come across a barrel maker we like, we will often decide to private label those barrels for resale under the NBS brand. We purchase these barrels in large quantities and then pass the savings on to our customers. Why buy an NBS Brand Barrel: American Made – Sourced from a variety of Tier 1 Manufacturers here in the United States Quality Control – All barrels are manufactured under ISO-9001 or better quality standards
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2 months ago
We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. This upper features a 16″ NBS M4 barrel chambered in 350 Legend with a 1:16 twist and a carbine gas system. With the NBS line we wanted to make sure that we used quality products that wouldn’t break the bank. This means using a nitrided steel gas block from APOC Armory as opposed to aluminum and using one of our classic NBS 16″ Midlength Barrels. Made in the USA Lifetime Warranty Upper Receiver NBS – 7075-T6 aluminum – M4 Feedramps
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3 months ago
NBS Nickel Boron Bolt Carrier Group for .223/5.56/300BLK Carrier M16 style (Auto) Machined from 8620 tool steel Heat treated to mil spec Bolt Machined from 9310 tool steel Heat treated to military specifications Shot Peened MPI (Mag Particle Inspected) Gas Key Machined from 17-4 Stainless Steel Heat treated to mil spec Extractor Machined from S-7 shock resisting tool steel Heat treated to mil spec Shot peened Extractor spring is made of stainless steel music wire Firing Pin Machined from 17-4 stainless steel Heat treated to milspec Specifications Weight: 11.6 oz
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4 months ago
We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. The NBS 6.8 SPC Quad Rail Upper Assembly, is a great all around upper, especially for hunting, which is why we included a KAK flash can. We wanted to direct the blast away from the shooter, to provide for a more pleasant shooting experience. The 6.8 SPC cartridge is also great in that fact there are many different weights and grains to use for this specific upper.
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4 months ago , by Dealer
Looking for a top quality Upper Receiver at wholesale prices? Building off of our Best-Selling, 5-Star Rated, NBS Stripped Upper Receiver, the NBS AR-15 Assembled Upper is machined by one of the foremost manufacturers of mil-spec AR-15 components, and then has a Mil-Spec Upper Parts Kit installed, right in America. Normally these assembled uppers are only available to builders when purchased from a name brand at a substantial markup, but we’re making these available at wholesale prices. What makes this upper different from other “Mil-Spec” upper receivers?
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4 months ago
We designed the next NBS .223 Wylde Complete Upper with maximum weight savings in mind, but we also wanted to make one of the most affordable Lightweight Complete Uppers, without sacrificing the integrity of the complete upper, and most importantly the rifle. This upper features a 16″ NBS M4 barrel chambered in .223 Wylde with a 1:8 twist and a Midlength gas system. With the NBS line we wanted to make sure that we used quality products that wouldn’t break the bank.
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5 months ago
NBS Assembled Upper Receiver Looking for a top quality Upper Receiver at wholesale prices? Building off of our Best-Selling, 5-Star Rated, NBS Stripped Upper Receiver, the NBS AR-15 Assembled Upper is machined by one of the foremost manufacturers of mil-spec AR-15 components, and then has a Mil-Spec Upper Parts Kit installed, right in America. Normally these assembled uppers are only available to builders when purchased from a name brand at a substantial markup, but we’re making these available at wholesale prices. Features: 7075-T6 Forged Aluminum Black Anodized finish Flat-Top
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5 months ago
Here at AR15Discounts.com we work with a wide variety of machine shops and barrel manufacturers. When we come across a barrel maker we like, we will often decide to private label those barrels for resale under the NBS brand. We purchase these barrels in large quantities and then pass the savings on to our customers. Why buy an NBS Brand Barrel: American Made – Sourced from a variety of Tier 1 Manufacturers here in the United States Quality Control – All barrels are manufactured under ISO-9001 or better quality standards
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