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View Full Version : Can I buy a .223 / 5.56mm BCG and swapout the .223 / 5.56mm..


jjrothWA
10-16-2021, 06:21
with a .450 BM to get a second upper operational??

Just want to complete the purchasing of the needed parts.


Advise.

JHR
lyman
10-16-2021, 07:19
swap out the bolt?

if so, yes,