ahh well, was a fun idea. the makarov seemed like an ideal candidate what with the way the barrel is setup, but i don't like the look of those tracer units as-is. too stubby.
You could get a shell milled though, same diametre as the tracer but much longer so you can stuff it with foam.
win-win-win-lose, you get the look you want, you get the tracer and you get some level of sound suppression too, but obviously your wallet will suffer more