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Q&A for KAK Industry K-SPEC Enhanced Low Mass AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group — 7 Questions & 7 Answers

Name KAK Industry K-SPEC Enhanced Low Mass AR-15 5.56mm/.300 AAC Blackout Bolt Carrier Group (4)
$225.99
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Q
jr., member, from DE, United States, asked on February 17, 2025

Are these 5.56/300 Blackout? Side or down vent?

A
Answered by Jordan, member, from TX, United States, on July 07, 2025

I’m inclined to believe the BCGs are 5.56/300BLK given the price comparison to KAK’s website and when I purchased my PVD-coated BCG it was 5.56/300BLK.

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Q
ben, member, from MN, United States, asked on October 01, 2025

Will this BCG fit a mil spec ar-15

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on October 01, 2025

Yes, the KAK Industry K-SPEC Enhanced Bolt Carrier Group is compatible with any Mil-spec AR15.

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Q
William Evett, member, from TX, United States, asked on September 09, 2025

Is this a complete bolt carrier group

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on September 10, 2025

Yes, the KAK Industry K-SPEC Enhanced Bolt Carrier Group is a complete BCG.

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Q
nate C, member, from CA, United States, asked on April 17, 2025

Is the sliver option on bcg hard chrome?

A
Answered by Jordan, member, from TX, United States, on July 07, 2025

Yes, I’m not sure why they described it as silver… all of KAK’s “silver” options are hard chrome.

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Q
Texas22, member, from TX, United States, asked on February 17, 2025

Is this the down vented NP3 model?

A
Answered by Jordan, member, from TX, United States, on July 07, 2025

As of writing this answer I don’t see an NP3 option. If they decide to sell one in the future (without labeling them), you can tell it’s NP3 if it looks like a darker chrome coating. As of now, the hard chrome BCGs are labeled as “silver”.

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Q
jep39, member, from KS, United States, asked on November 21, 2025

Can this be used in a carbine?

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Q
Joe, guest, from OH, United States, asked on April 02, 2025

Type 2 6.5 grendel?

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