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A*B Pro 5.56 Bolt Carrier Group - Complete Nickel Boron Assembly
A*B Pro 5.56 Bolt Carrier Group - Complete Nickel Boron Assembly


 



Our Price: $199.99

Availability:: Usually Ships in 24 to 48 Hours
Product Code: ABABCGNIB
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Description
 
A*B Arms A*B Pro 5.56 Bolt Carrier Group is built to Mil-Spec dimensions. The Nickel Boron coated Bolt and Cam Pin needs virtually no lube during use. The Nickel Boron coated Carrier is coated for extra lubricity and the phosphate coated extractor has a surface finish that provides superior extraction during firing.

These Bolt Carrier Groups are ready to drop into your rifle. Our Bolt Carrier Groups are specially made on high end Swiss machinery to have exacting tolerances and surface finish. A*B Arms is known by rifle manufacturers for manufacturing one of the finest quality bolts and extractors available. This has won us contracts with some of the highest quality AR manufacturers in the business. If you want to buy super high quality parts offered by the company that actually manufactures them, then you've come to the right place.

Bolt
Carpenter 158 Steel
Heat treated per Mil-Spec Requirements
Shot Peened per Mil-Spec Requirements
MPI Tested Material
Nickel Boron Coated

Bolt Carrier

8620 Steel
Nickel Boron Coated
Nickel Boron Coated Bore
M-16 Style with more mass for better functioning in semi or full auto rifles

Gas Key

4130 Steel
Nickel Boron Coated
G
as Key Screws - 4140 Steel properly staked per Mil-Spec requirements

Cam Pin
4340 Steel
Heat treated per Mil-Spec Requirements
Nickel Boron Coated

Extractor
Aircraft Quality E4140 Steel
Heat treated per Mil-Spec Requirements
Shot Peened per Mil-Spec Requirements
Manganese Phosphate Coated per Mil-Spec Requirements

Firing Pin

AISI 8740 Steel
Chrome Coated

Made in the USA!







Average Customer Review: 5 of 5 Total Reviews: 55 Write a review.

  0 of 0 people found the following review helpful:
 
Shiny and chrome October 24, 2018
Reviewer: Brett Barrett from Dallas, TX United States  
Robust, sturdy, beefy, slick, exceptionally well made.

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  0 of 0 people found the following review helpful:
 
AR-15 Complete Bolt Carrier Assembly August 27, 2018
Reviewer: Zane Johnson from Hardy, AR United States  
Absolutely a fantastic product !  Also, very pleased with the expedited product handling, packaging and shipping.

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  0 of 0 people found the following review helpful:
 
Great Products April 21, 2018
Reviewer: Darryl Emerson from El Cajon, CA United States  
I like the bolt carrier group. It seems to work very well in my AR. Will like it even better when I don't have to work hard to get it clean. Great job guys!

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  0 of 0 people found the following review helpful:
 
Nickel boron bcg April 19, 2018
Reviewer: Phil from United States  
This is my second bcg from AB Arms.  I’ve been using the first one for over a year now and it’s been flawless.  Excellent machining and a perfect, easy to clean finish.  These should stand up to years of abuse.

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  0 of 0 people found the following review helpful:
 
An arms bcg March 22, 2018
Reviewer: Anonymous Person from salem, UT United States  
Real quality built with American pride.vetran owned.

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