Re: Mosquito or P22 for suppression
I'm not aware that RUGER makes suppressors, integral or not, though there are LOTS of folks who SELL integrally suppressed MKII/MMIII.
Then there's the whole can vs integral debate. I figure your first suppressor should be a .22 can, for the versatility.
As to which gun, the only reasons for the popularity of Mosquitos and P-22s are the low price, pre threaded condition, and tacticool looks. You'll note there's nothing said about durability, reliability, or serviceability. In the 6 or 7 years these things have been sold, they have acquired a reputation that's spotty, at best.
Ruger's been making their .22 pistol for 60 years. Buckmarks have been in production at least 20 years. The worst you ever hear about Rugers is from some guy with an abnormally high thumb/finger ratio about how hard they are to service. You rarely hear about unreliability of one that's broken in, or about broken parts, even the new (20 years or so) model with the plastic grip frame. Buckmarks enjoy a similar reputation for reliability. These are guns your grandchildren can fight over.
They cost little more than these AirSoft-meets-.22 tacticool range toys.
Buckmark is available threaded, and a bunch of folks will shorten/thread your Ruger.
There are 3 models of Sig Classics that have threaded barrels available; these are not bad pistols, but they cost a lot more than Ruger. or Buckmarks. Clark sells threaded match barrels for M-41s at the price of a whole Ruger, CZ's Kadet is VERY strong and reliable and can be threaded, for a big price. Long barrels are available for Advantage Arms Glock .22 kits.
Any of these will give longer, more satisfying service than a $300 import. Do you have any idea how low the production cost of these things has to be to sell, after our protective tariffs for $300?
If you've recently submitted your Form 4, you have time to buy a better gun and get it threaded, if it doesn't come that way.
Buy once, cry once.