Full Auto Bolt Carrier Group Nickel Boron AR-15
Factory New Condition
FFL is not required
Current Bid
BuyNow! Price Was
Starting Bid
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1 Bids Bid History
Time Left 15 min rule
Item has Ended
8/12/2017 6:27 PM
Item 680354782
Location Knoxville, TN 37938
Priority Mail$6.99
See Item Description
No international shipments
Payment Visa / MasterCard, American Express, Discover, PayPal, USPS Money Order, Money Order, Certified Check, See Item Description
Checkout Yes
Sales Tax
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Inspection/ Return Policy

The seller of this item assumes all responsibility for this listing. You must contact the seller to resolve any questions or concerns before placing a bid. Payment must be made using U.S. dollars ($) unless otherwise stated in the listing. Firearms may only be shipped to a licensed dealer (FFL Holder). Some listed items may not be legal in every state. Complete your purchase within the law.

Nickel Boron, Magnetic Particle Inspected, Complete Bolt Carrier Group (BCG).


This BCG comes completely assembled and will operate in any AR-15 that fires .223, 5.56 or 300 AAC Blackout (BLK).

AR-15/M16 5.56/.223/.300 BLACKOUT complete Nickel Boron Bolt Carrier Group. Nickel Boron has proven itself to be the most durable finish on the market. It’s much smoother than Hard Chrome, it’s easier to clean, makes the rifle cycle smoother, it can be run almost lube free for thousands of rounds, and it will never chip, peal, or flake off! Because of these benefits, Nickel Boron is being adopted by the Military as well as many Government agencies.
We are having these bolts manufactured to our exacting standards to be able to offer the best BCG at the Best Price! Features ; Shot peened, Magnetic Particle Inspected (MPI) and High Pressure Tested (HPT), 9310 Tool Steel Bolt; 8620 Chrome lined M16 carrier, Properly staked 4140 Machined Gas Key fastened with Hardened Grade 8 Fasteners. Extractor includes crane o-ring. This is an Excellent Bolt and an Excellent Price! More details below.

The requirements for assembly of our Bolt Carrier Groups are much higher than most. Before assembling the gas key to the carrier, permatex NO.3D aviation is applied to form-a-gasket around the gas port (per MIL-SPEC). Then Grade-8 hardware is used to attach the gas key, followed by properly staking per spec. When installing the extractor to the bolt, a crane-o-ring is inserted with the spring to insure proper ejection. Then high temperature grease is applied to the gas rings before inserting the bolt into the carrier, which allows for much smoother operation. These BCGs are inspected to the highest of standards, to insure a high quality product that is 100% reliable for our customer… PROUDLY MADE IN THE USA!

M16 style (Auto Capable). Will operate flawlessly in civilian semi-auto AR platforms.
Machined from 8620 tool steel
Heat treated to military specifications

Machined from 9310 tool steel
Heat treated to military specifications
Shot Peened
Ground to meet military required tolerances
MPI (Mag Particle Inspected)

Gas Key:
Machined from 4140
Heat treated to military specifications

Machined from 4140
Heat treated to military specifications
Shot peened

Firing Pin:
Machined from 8640 tool steel
Heat treated to military specifications
Ground to meet military required tolerances
Coated with .0002”-.0003” of hard chrome per MIL-STD-171

Cam Pin:
Machined from 4340
Quench and temper heat treat
Ground to meet military required tolerances

Payments accepted:
Money order, certified check, PayPal or credit card (add 3% fee for PayPal or cc transaction). Winning bidder will be contacted following auction for payment preference.

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Mfg Part Number