My entry gun is a Commando.  Two years ago our team went mainly to M4's/Commando's and fortunately our recent engagements have been outdoors.  We have been looking into hearing protection so no one will have to get the early retirement package should we "fear for our safety" indoors.  So far we've tested some full size cans (way to heavy and too long) and tried the electronic ears from various manufactures.
         What I would love is a FH/SUPRSR that recesses back two inches to the FSB and only extends an inch or two past the barrel.  I use a Vortex now so my goal is to stay with the same overall length.  I just want enough noise cancelling effect to get the sound levels in the handgun ranges.  I fugure my ears can take that much better.    This way I don't have a huge can on the end of my entry gun and my Commando stays a Commando.........  Thnx

you might have better luck asking in the M-16 Full Auton section

Check out the Troy Industries silencer, Denny's/GTS in the EE has them in stock.

www.troyind.com/suppressors.htm