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BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
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BROWNELLS - BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride

9 Reviews
BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride
Brownells #
078102007
MFR #
M16 BCG 458 SOCOM / 450 BM NIT
UPC
050806112315
$110.99
Coupon Code
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International purchase information

Specifications
Carrier Type:
M16
Cartridge:
458 SOCOM,458 SOCOM,,450 Bushmaster
Finish:
Black Nitride
Color:
Black
Make Model Fit:
AR-15.Universal
Restriction
Restricted Part:
Yes
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What is the BROWNELLS - BRN M16 458 SOCOM/450 Bushmaster Bolt Carrier Group Nitride?

Get your .458 SOCOM or 450 Bushmaster AR-15 running perfectly with the Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group, which features construction and finishing designed to provide the best possible performance in your rifle. The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group features a bolt head built using 9310 steel, which undergoes heat treatment and shot peening for a durable finish. The carrier itself is made using 8620 steel that undergoes hardening after machining.

  • Undergoes magnetic particle inspection
  • Extractor construction includes rubber insert and spring
  • Increased corrosion resistance offered through black-nitride finish
  • Features torqued and staked gas key

The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group provides users with a complete assembly, also including a firing pin, cam pin and a firing pin retaining pin.

See all of our AR15s and AR15 parts here.

Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

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    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

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M16 450 BUSHMASTER / 458 SOCOM BOLT CARRIER GROUP NITRIDE REVIEWS

3.6
9 Reviews
5 Stars
56%
4 Stars
11%
3 Stars
0%
2 Stars
0%
1 Stars
33%
Reviews Summary
The M16 450 Bushmaster / 458 SOCOM BCG is praised for its overall quality and value, yet experiences varied issues. While many users report reliability and good performance after tweaks, several complaints highlight feeding and extraction problems. Overall, it’s seen as a solid choice, particularly with modifications, but some users faced significant operational challenges.
What Reviewers Are Saying
Product Quality
50%
Reviewers generally commend the quality of the BCG, noting its solid construction and fit. Many trust the brand and have had positive experiences with previous builds, reinforcing the perception that it is a well-made product at a fair price.
Reliability and Performance
65%
While some users face significant feeding and extraction issues, particularly in .458 SOCOM builds, others report flawless operation after modifications. This mixed experience indicates that reliability can vary greatly based on the specific setup and user adjustments.
Installation Experience
45%
Most users report a straightforward installation process, with many having no issues while installing or testing at the range. This ease of setup is a positive aspect that many reviewers appreciate.
Customer Support and Community Insights
30%
Several reviews mention seeking help from the community or fixing issues through online research. This indicates a collaborative spirit among users, suggesting common challenges with certain setups that can often be resolved with shared knowledge.
Value for Money
55%
The product is often described as great value for the price, especially when on sale. Users appreciate that they can get a solid BCG without breaking the bank, making it a popular choice for both personal and custom builds.
5
Great price on BCG
Seems to be a great quality BCG and at a great price! I have not fired it yet, because I still need more parts to finish my build, but with Brownell's warranty I am confident that this BCG will work just fine!
Would you recommend this? Yes, I would recommend to a friend
by JOSEPH PARSONS on January 16, 2025
Verified Purchase
Was this review helpful? 0
5
New AR Build
The BCG is the heart of my new build (.458 Socom) I have not finished the build yet. But, Brownells BCG looks flawless. Looking forward to completing it soon.
by ROBERT WALKER on December 15, 2023
Verified Purchase
Was this review helpful? 0
5
Works
Works as intended. Finish is a little splotchy on the bolt but doesnt matter.
by Ecm on March 08, 2022
Was this review helpful? 1
5
It's your magazine.
I put this BCG in an anderson XL upper, MOS-tek 18" carbine length gassed barrel, rifle buffer/tube (it's off of a MK12 MOD 1 build) and i use C-products .450 duramags. Runs flawlessly and shoots 1/2 MOA with honaday black. Just wanted to clear the air on the 4 reviews that are currently on this page.
by The ex infantry armorer on February 12, 2022
Was this review helpful? 9
5
600 rounds and counting
ZERO issues in 600 rounds of 458 reloads. HOWEVER I removed the outer rubber donut/extractor booster before I ever used it. Just like in 223, you only donut if you get failures to extract (leave the little insert and spring in the usual places). Very happy with this BCG, especially at the sale price.
by less running more gunning on June 01, 2019
Was this review helpful? 3
View All 9 Reviews
Customer Questions
10 Questions