Ask the guy who wants one. I'm putting together a pistol w an LMT 10.5-in. upper in 5.56 mm, because I want to.
Reckon the guy who wants one in 9mm or other calibers still has that right.
Must folks run that by you for approval? Are you the application monitor?
Shooting is supposed to be fun, and in my experience, many play toys we mull on this site can kill things with alacrity.
He doesn't want it for a toy, he wants it for a self defense platform. If he's punching paper, sure, it doesn't matter, but he's considering this for applications where things are trying to kill him. In this regards, there are probably better options.
