This past Monday my stamps came through on a full auto Powder Springs Mac 10 and a NIB Gem-Tech Viper 45. I installed the Gem-Tech and immediately noticed much more play than I feel is appropriate. I think a baffle strike right now would be near certain. Since I'm a handloader, I have a set of measuring calipers. The Viper's exit hole is .50 of an inch. The round is .451. Leaving .049 of allowance for play (assuming a dead center threading for both the Mac barrel and can - possibly idealistic).
I can't say my method of measuring the play was perfect, but I feel like it could be as much as .07 and definitely at or over .05 making me confident a range trip would do damage.
Removing the "locking teeth ring" the Suppresor seems to wobble no more or less. I don't see any issue with the internal threads on the Viper. The Mac is old, but it's thread by no means look mangled. You can smoothly screw the can right on.
I have a new threaded Mac barrel on the way, which may help. But I really hope that this wobble is "normal," I measured it wrong some how, or there is a "secret trick" that won't require the can to go back to Gem tech.
I'd enlist Gem-Tech's help, but they don't seem to respond to email, voicemail, or phone call...
Much appreciation
