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by Phil, from TN, United States Asked on May 31, 2021
Yes, any standard AR-15 bolt carrier group will work with an AR15 .300 Blackout build.
There's like 3 other people that have asked that question already n I wouldn't be surprised if this isn't listed above already too any standard 5.56/2.23 bcg will work with a standard 300 aac ar15 build