I am putting together a couple lightweight carbines for my older children who have started going to the range with me. I have one 14.7” pencil BA barrel and plan to pick up a couple more, though I’m not married to that. I would prefer to set these up to use suppressors, though that is not how I started.

I have a Dead Air Micro flash hider on my 300 BLK, which is actually designed for 9mm.

If I drop these on a 5.56 barrel, is the flash suppression going to be that much less than an A2?