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by Chris, from MO, United States Asked on June 7, 2021
It should becaus 300BLK and .223Rem/5.56NATO AR-15’s use the same upper receiver and BCGs. The only difference are the barrels.
300 blk and .223rem/5.56 AR-15’s use the same upper and BCG. The only difference is the barrel
YES!!!....if you are using a mil-spec upper receiver, and a mil-spec BCG this will absolutely work....
Yes it will. At the lower application, 223/556/and 300 BLK are all the same components. Only differing at barrel/barrel mod/ammo.