NBS .223/5.56 Bolt Carrier Group - Black Nitride - AR15-Bolt-Carrier-Group

Save 43 % MSRP: $139.95 $79.95

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NBS .223/5.56 Bolt Carrier Group - Black Nitride quantity

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This product appears in the following bundles / configurators

• NBS 16″ 5.56 NATO Midlength Nitride M-LOK Builders Kit w/ 5 Magazines
• NBS AR-15 5.56/.223 BCG/Charging Handle & 5 Hexmag Gen 2 Magazine Bundle
• NBS 20″ 5.56 NATO Nitride M-LOK Rifle Kit
• NBS AR-15 5.56/.223 Pistol Kit Configurator
• NBS AR-15 5.56/.223 Rifle Kit Configurator
• NBS 11.5" 5.56 Nitride M-LOK Pistol Kit
• AR-15 .223/5.56 Rifle Kit Configurator
• Dirty Bird 13.7" .223 Wylde Midlength Medium Profile 1:8 Complete Upper Configurator
• AR-15 .223/5.56 Complete Upper Configurator
• Dirty Bird 16″ 5.56 NATO Midlength Nitride M-LOK Rifle Kit w/ MBUS Sight Set
• NBS 16″ .223 Wylde Midlength Nitride M-LOK Rifle Kit
• NBS 7.5" 5.56 Nitride M-LOK Pistol Kit
• NBS 7.5" 300 BLK Nitride M-LOK Pistol Kit
• NBS 10.5" 5.56 Nitride M-LOK Carbine Pistol Kit
• NBS 7.5" 5.56 Slick-Side Nitride M-LOK Pistol Kit
• NBS 16″ 5.56 NATO Midlength Nitride M-LOK Rifle Kit

The NBS .223/5.56 Black Nitride Bolt Carrier Group was designed with strength in mind. Starting with a 9310 Steel Bolt, which is aircraft-grade material, this bolt has a high core strength rating, a high fatigue strength, and a high hardenability rating. 9310 steel, when treated properly, is about 7% better than Carpenter 158 steel, so you know that you will have a dependable BCG, when you drop this into your rifle.

This NBS BCG (Bolt Carrier Group) has been Nitrided, so that it can provide a long-lasting experience, and provide a significant upgrade to your AR-15. These BCG’s have also been Magnetic Particle Inspected and have been made to Mil-Spec Standards. It also has Mil-Spec 8740 Steel hard-chromed Firing Pins, Mil-Spec Gas Keys with Grade-8 screws that are staked and sealed with Permatex No.3, and they have shot-peened case-hardened D2 tool steel extractors. Plus, with the AR15Discounts satisfaction guarantee, you can buy your AR build components without apprehension. Our guarantee says if you are unhappy for any reason, you can send it back to us within 30 days for a full refund. No worries.

NOTE- The Salt Black Nitride BCG offers the dark, subdued finish that doesn’t change the specs of the Bolt Carrier, but it still makes the outside of the Bolt Carrier harder. This treatment increases the longevity of the part, makes it extremely wear resistant and durable, and this treatment protects the part from corrosion.

Technical Specs:
•    Gas system: Direct Impingement
•    Caliber: 5.56x45mm NATO/.223 Rem, .300 Blackout
•    Finish: Salt Black Nitride
•    Bolt: 9310 Alloy Steel (High Hardness)
•    Carrier: 8620 Aircraft Grade Steel
•    Extractor: Shot Peened and Case Hardened D2 Tool Steel
•    Firing Pin: Mil-spec 8740 steel with hard chrome finish
•    Gas Key: Mil-Spec w/ properly staked Grade-8 screws & Permatex No. 3 sealed
•    Cam Pin: 8620 Steel w/ Black Nitride Finish
•    Quality Control: MPI Inspected for QC

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.

Please select an FFL from the table below, if you do not see your desired FFL, click "Set Later" and you will be able to enter your FFL's information after checkout.