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BRG 5.56mm/.223 Complete Bolt Carrier Groups BCG556BRG Color: Black, Finish: QPQ Nitride, 37% Off w/ Free S&H

BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
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BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
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BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
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BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG
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BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG

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Questions & Answers
Is this Mil-Spec?

Yes, per the last entry of the "features". Also, MPI usually means it meats MIL spec standards.

by Andy Golden, Verified Owner, December 25, 2024
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews The garbage by ThatGunGuy, Verified Owner, March 9, 2025
This product was cheap enough to try. Got it in and the bcg was in 2 pieces. The bolt itself wasn't in the carrier, found out the rings were hitting the inside of the carrier and bending. I replaced the rings, went in fine. Got it together, put in ri...
Read More...
Most Recent Reviews BRG Complete BCG by Kalaka, Verified Owner, July 17, 2024
Great fit and finish, just what I needed to complete my build at a good price. I’ve put 500 rounds through it so far with zero issues. I will purchase again for my next build.
Most Recent Reviews Does what it’s supposed to by JM, Verified Owner, June 23, 2024
Ordered this for a new set-up. Took it to the range and had no issues.
Most Recent Reviews out of spec by Brian Reynolds, Verified Owner, June 20, 2024
Completely useless BCG. It was so far out of spec that it wouldn't even seat into the upper receiver. It would bind and get stuck before seating into position and was even difficult to remove. Thats what I get for trying an unfamiliar brand on sale. ...
Read More...
Read All 4 Reviews
Color: Black Finish: QPQ Nitride Caliber: .223 Remington , 5.56mm Gun Make: AR Platform Gun Model: AR-15 Hand: Right

Code: 5YZ-BCG-HJ11KA-BCG556BRG

MPN: BCG556BRG

UPC: 689481713779

List: $129.99Save 37%
$81.99

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Product Info for BRG 5.56mm/.223 Complete Bolt Carrier Groups

Magnetic particle inspected (MPI) to ASTM E1444 aircraft quality inspection standards for molecular soundness and longer life of all the below-mnetioned metal parts.image

Specifications for BRG 5.56mm/.223 Complete Bolt Carrier Groups:

Manufacturer: BRG
Color: Black
Finish: QPQ Nitride
Fabric/Material: 8620 Steel
Caliber: 5.56mm, .223 Remington
Gun Make: AR Platform
Gun Model: AR-15
Hand: Right

Features of BRG 5.56mm/.223 Complete Bolt Carrier Groups

  • Carrer - 8620 (20NiCrMo2-2), heat treated (case hardened to SAE-AMS-6875) - QPQ nitride finish.
  • Bolt - 14NiCr14, heat treated (case hardened to SAE-AMS-6875) - QPQ nitride finish.
  • Extractors - Aircraft quality alloy steel shot peened. Heat treated to military drawing specification SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
  • Gas Key - 4130, aircraft quality steel, heat treated to SAE-AMS-6875 QPQ HT PROCESS
  • Cam Pins - Precision machined. Heat treated to SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
  • Firing Pin - Machined and precision ground for accuracy. Heat treated to military drawing specification per SAE-AMS-6875. Chrome lined per 1.2.2 of MIL-STD-171.
  • Firing Pin Retaining Pin - Heat treated stainless steel pin contouring the carrier body.
  • Ejector - Precision machined. Heat treated to SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
  • Gas Rings - 3 pc. stainless steel per Mil-Spec.

Package Contents:

  • BRG 5.56mm/.223 Complete Bolt Carrier Groups

This product is compatible with the following gun models: AR-15

BRG 5.56mm/.223 Complete Bolt Carrier Groups Orderable Models

List of Orderable Models

BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG , MPN: BCG556BRG , UPC: 689481713779 , Code: 5YZ-BCG-HJ11KA-BCG556BRG

BRG 5.56mm/.223 Complete Bolt Carrier Groups Unavailable & Discontinued Models

List of Unorderable Models

DEMO, BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG , MPN: BCG556BRG-DEMO , Code: 5YZ-BCG-HJ11KA-BCG556BRG-DEMO
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