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CMMG M16 Bolt Carrier Group 55BA419 5.56mm Black Phosphate

Name: CMMG M16 Bolt Carrier Group 55BA419 5.56mm Black Phosphate
Brand: CMMG
SKU: 89861
Price: 134.49 USD
Availability: InStock
Rating: 5.0 (2 reviews)

CMMG M16 Bolt Carrier Group 55BA419 5.56mm Black Phosphate - View 1

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Specifications

Weight 0.6 pounds

Material Steel (9310 bolt, 8620 carrier with chrome lining, 4140 extractor); phosphate finish

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV

Description

Product Overview

The CMMG 55BA419 M16 bolt carrier group for 5.56mm AR-pattern rifles is built to Mil-Spec standards with a 9310 steel bolt, an 8620 steel chrome-lined carrier, and a 4140 steel extractor. Finished in phosphate for improved wear resistance and corrosion control, it is designed for reliable operation in 5.56mm builds that use an M16-style BCG.

Key Features

Mil-Spec style M16 bolt carrier group for 5.56mm AR-platform builds
9310 steel bolt for strength and durability
8620 steel chrome-lined carrier to support smooth cycling and longevity
4140 steel extractor for dependable extraction performance
Phosphate finish for corrosion resistance and long-term wear protection

Upgrade or replace your AR bolt carrier group with a Mil-Spec configuration from CMMG for consistent performance in 5.56mm setups.

$174.95 $134.49

5.0 | 2 Reviews

SKU:: 55BA419
UPC:: 852005002431
BUDS ID:: 89861

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Customer Reviews (2)

Q & A (1)

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Customer Reviews

5.0 out of 5

2 total reviews

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Latest Reviews

Joseph L.

2 months ago

Verified Purchaser

I dropped this into a...

I dropped this into a Wyndham Arms AR and it was a perfect fit. No issues at all, didn't even need to be broken in.

David M.

8 years ago

Verified Purchaser

Quality MILSPEC, but...

Quality MILSPEC, but had to ask to get detailed specks.

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Questions & Answers

Q: will this work for a 300 blackout upper?

Author: Mike D.

(1) ANSWER

A: Yes, 300 Blackout is made using a 223 case widened at the throat to accept a larger bullet. Rim is the same and works with .223/5.56 bolt carrier groups.

Author: Trevor D.