Check with Quiet Riot in McDonough. They had the Mask in the showcase for sale when I was in there last week.
I picked up my Energetic Armament NYX Mod2 last week. It sounds identical to my Mask. I can't tell any difference.
The mags are the only downside to the FVSR. I went with a Ruger American model 8372. A little more $$ than the FVSR but I already had plenty of 10/22 mags that it uses. I run a Spectre II or a Mask on mine. Stupid quiet with CCI Standards.
Would polymer coated lead bullets loaded subsonic for a .300BLK be OK to shoot thru a suppressor like a Rugged Surge? I don't want to crud it up. Will a few supersonics clean the can out after shooting them?