The Sig 1911 is not made by Sig-Sauer,,,
It is built for then by Umarex,,,
They make airsoft guns.
The Mosquito has been a problem handgun since it came out,,,
It is very picky about which ammo it will run,,,
In general it's reliability is poor.
Both if the above guns are built using Cast Zamak slides,,,
They are firearms but in my opinion are merely toys.
The Sig-Sauer P229 Classic 22 is a real pistol,,,
That happens to be chambered for the .22 rimfire cartridge.
It is one of a very few .22's that can be converted up to a centerfire cartridge,,,
Using the SIG SAUER X-CHANGE Kit your .22 can be a 9mm, .40S&W, .357SIG, or .45ACP (availability varies by model).
Yes it will cost you more money,,,
But the other two pistols are really not very good guns.
JMHO - YMMV