I just purchased a Sig MPX and am interested in a 9mm silencer for it. As of right now, I'm leaning towards the Griffin Revolution in 9mm. From what I've read, the MPX thread is a 13.5x1 LH. However, because it is a fixed barrel, I assume I don't need a piston for it, correct (this will be my first can). If that's the case, what should I order to attach it? Also, would I then be better off buying a 1/2x28 piston for my pistols (in particular my PPQ which I will at some point buy a threaded barrel for) and separately buying an adapter for the MPX as I assume the piston will be more expensive than a simple adapter and that the piston is unnecessary on the fixed barrel? I'm also in the process of transitioning my 5.56 SBR to 300BLK (well, buying a new barrel) which I would also like to use this suppressor on with subsonic rounds if that changes your thoughts at all.
I like the Revolution for it's potential to be shorter should I want it to be and its "cleanability" though, with my inexperience, I'm not sold that these are necessities. I have also considered the Mystic X and the Octane for this purpose if you have any thoughts on those instead. Lastly, given that I would predominantly be using it on a new Sig product, which their rep at the NRA show in Nashville said, are all being built for their silencers from the ground up, would it be worth my while to just wait for the Sig products? With your admittedly limited experience, should I be considering them anyway over the Revo 9?
Thanks in advance for the help, I realize there's a lot to answer there!