Thanks SD, sounds like It'll work fine, but want to be certain before I move on. Your saying you tried it in your Gen 4 G21?
If so, I'm guessing the barrel won't affect reliability, just accuracy?
I'm planning only putting a few rounds through my 21. It will only carry super rounds when bow hunting.
The two loudest sounds known to man: a gun that goes bang when it is supposed to go click and a gun that goes click when it is supposed to go bang.