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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:: Back Order
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
Gas 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: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 62 Write a review.

  0 of 0 people found the following review helpful:
 
5 of 5 Very reliable May 31, 2020
Reviewer: Sam Buttari from Waverly, VA United States  
Great product shipped fast

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  0 of 0 people found the following review helpful:
 
5 of 5 Impeccable Workmanship! August 17, 2019
Reviewer: Dennis from Tampa, FL  
I was very pleased to see the high quality of workmanship and finish of the AR-15 5.56 Nickel Boron BCG. It slid very smoothly into my 80's Colt Delta HBAR. It cycles very smoothly when I manually manipulate the action. I am looking forward to seeing how it performs at the range. Initial impressions are quite impressive!

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  0 of 0 people found the following review helpful:
 
5 of 5 Outstanding product. August 3, 2019
Reviewer: PA Jim from Ottsville , PA United States  
I ordered a bolt carrier group. It came quickly, and I was impressed at the quality as soon as I opened the package. The item was rock solid, smooth finish, and just all around good quality. After a few hundred rounds, I'd trust my life to this product.

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  0 of 0 people found the following review helpful:
 
5 of 5 Recent Purchase April 28, 2019
Reviewer: Michael Nelson from McHnery, IL United States  
Nickel Boron BCG was just as I expected.

Thank You Again

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  0 of 0 people found the following review helpful:
 
5 of 5 One uear of service March 6, 2019
Reviewer: Bill Ward from Wilmington, NC United States  
I am very pleased with the nickel boron assembly  that i purchased from American arms .The quality and attention to detail they put into there product is fantastic. This is only one of 2 and  a rifle kit .keep up the food work  awsome stuff!

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