I am currently waiting on a package and the funds necessary to complete my first two cans, a 9mm and a 22LR.
Assuming these go well, I was considering building an integrally suppressed AR, either in 9mm or 300 BLK.
The general idea is a baffle stack inside a tube (standard suppressor), threaded onto the barrel. However the tube would have a series of holes drilled in it that would expose the expansion chambers behind/in-front of the baffles.
This suppressor would be housed inside a larger tube, maybe 3 or so inches in diameter, acting as a handguard, threaded onto the receiver, similar to the picture down the page in this thread: http://www.silencertalk.com/forum/viewtopic.php?t=50336
The larger tube would act as a secondary "suppressor" , if you will, by (in theory) further slowing the expansion of gases and adding a substantial amount of additional volume. Maybe the outer tube could also have some steel mesh or something in it to act as a sound dampener.
I am not a suppressor designer, I was just thinking about this at work the other day and was thinking it would be cool to have a 300 BLK that sounded like a 22LR, if possible.
The picture in the link I posted is what gave me the idea. A long suppressor with venting holes inside a larger tube seems like it would be quite quiet, though somewhat long and bulky.
Can anyone give any advice on this design? Is there any reason this wouldn't work? Or will I be dissapointed?
My goal here is to make a (300 or 9mm) rifle as absolutely Hollywood quiet as I can. Why? Because it would be freakin' cool.