Why not a compensator? the flash hider doesn't do much, and a decent comp can be had for $65, which is less than the shot shock tube, I think.
Well actually I have this on the way (somewhere between here and Salt Lake City);
The hider I have on it now was $9.95 from CSS til the other comes.
"ALSO, TO MY MY UNDERSTANDING, ENIDINE DROPPED PRODUCTION OF THAT HYDRAULIC BUFFER JUST AFTER NEWTOWN; DIDN'T WANT TO BE SEEN AS HAVING ANY CONNECTION TO GUN STUFF."
This is true, I just happen to have an extra.