I have 2 ARs...223 and 300 blkout (both on E). What is the best way to go for a 9mm upper set up and where to source?
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I have 2 ARs...223 and 300 blkout (both on E). What is the best way to go for a 9mm upper set up and where to source?
Sent from my SM-G925I using Tapatalk
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