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AR15 Bolt Carrier Group Nickel Boron - .223, 5.56, .204, 300 Blackout
Nickel Boron Bolt Carrier Group

AR15 Bolt Carrier Group Nickel Boron - .223, 5.56, .204, 300 Blackout

On sale:$134.00
Retail Price:$148.00
You Save:$14.00(9%)
IN STOCK

Part Number:199-UP038

Nickel Boron AR15 Bolt Carrier Group
   Precision machined complete BCG (Bolt Carrier Group) combines shot peened surfaces with Nickel Boron finish for the best lubricity, function, and endurance.  Fits guns chambered for .223, 5.56, .204, 300 Blackout, etc. Made to exact compliance with military drawings, then taken to the next level with advanced machining and finishing processes:
   The bolt is 9310 formula steel, heat treated, magnetic particle inspected, with gas rings fitted to Milspec. The carrier is 8620 formula steel, heat treated, and held to the closest internal tolerances for accuracy and reliable function... Including full auto applications. The cam pin and firing pin are Swiss Screw turned and precision ground to achieve the closest dimensional tolerances and straightness. CNC machining and exact heat treating makes the extractor reliable and extremely wear resistant. And finally the Gas Key... CNC machined to comply exactly with military drawings, it gets heat treated, chrome lined, and is then torqued and staked onto the carrier in compliance with full auto military specifications. 
  If you are shopping for an accuracy enhancing AR15/M16/M4
Bolt Carrier Group, you can't buy better than this one... At ANY Price!

5 Stars
CMSgt
Nice. I have bought three so far.
Reviewed by:  from San Antonio. on 9/5/2017
5/5
5 Stars
Great BCG
I have shot this hundreds of times in the first day out ... love it ... no problems
Reviewed by:  from Iowa. on 7/31/2017
5/5
5 Stars
CMSgt
Nice
Reviewed by:  from Texas. on 7/5/2017
5/5
5 Stars
Alex Pro BCG
Excellent machining and even Nickel Boron coating. A great value from EABCO with great service.
Reviewed by:  from Illinois. on 1/20/2017
5/5
5 Stars
Alex Pro bolt carrier
Performs beautifully. Headspace was excellent
Reviewed by:  from Covington. on 12/23/2016
5/5
5 Stars
Crusty Ol' Gas Passer
Great BCG. Nickel Boron is the way to go. You could run these dry but I still lube them up liberally. Makes clean up even easier if they run wet. I have these on three ARs.
Reviewed by:  from The Great Southwest. on 12/20/2016
5/5
5 Stars
Mr.
Great company. Great products. Fast shipping. The nickle boron AR-15 BCG appears flawless upon inspection. I am very pleased with the purchase and will probably make another purchase with my nest build. I am anxious to try out the BCG in my recent project and will do so as soon as I can get to the range. EABCO is the BEST! Super customer service!!!
Reviewed by:  from NW NC. on 9/13/2016
5/5
5 Stars
individual
one of the best bolts on the market.
Reviewed by:  from WV. on 6/19/2016
5/5
5 Stars
Nice Bolt
I purchased three of these for some builds I would like to do in the future. I'm not a machinist or a gunsmith so I can't comment on exacting specs. What I can tell you is that the fit and finish are very high quality. The NB coating seems to be uniform over the entire surfaces of the components of the group. I wouldn't hesitate to purchase these again.
Reviewed by:  from Cambridge. on 6/8/2016
5/5
5 Stars
Shooter
I'm very impressed with the fit and finish on this bolt and carrier group. I compared it to a NM chrome plated one I had from a few years back, and this Nickel Boron one was clearly superior. And the price is nice also.
Reviewed by:  from Fairfax, VA. on 5/29/2016
5/5

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