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Will my 300 blkout bch work in the 5.56 upper? — 2 Answers

by Michael, from LA, United States Asked on November 4, 2021

Name Ghost Firearms Vital 5.56 Upper Receiver (4.8)
As Low As $259.99 Save Up to 13%
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A
Answered by Patrick, Gear Expert, from IL, United States, on November 08, 2021

Yes, the 300 BLK out BCG will work with the 5.56 upper.

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A
Answered by C. Burton, member, from MO, United States, on October 08, 2022

A 5.56 and 300 blackout bolt carrier group are EXACTLY THE SAME BCG. They don’t make a 300BLK specific BCG. The 5.56/.223 BCG is used for a 300BLK round.

DO NOT SHOOT A 300BLK cartridge out of this upper. DO NOT. Big boom. Bad juju.

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