I have the .22 LR version with a tube mag and in stainless... worst .22 I own. Its accuracy is terrible, I've tried all sorts of ammo and the best it gets is 2 inches at 50 yards... my Ruger Charger does 1/2" at 50 with standard velocity, 1" or better with the hotter stuff, Mossberg Plinkster also better.
The stock on the XT-22's is the cheapest feeling polymer I've ever felt. I know polymer is nothing to praise, but I never felt like the stock on the Mossberg was cheap, the molded checkering always felt solid and crisp, but the Marlin feels like nylon fabric.
The open sights are awful, but the good news is Tec-Sights makes replacement sights for it, but these XT's are meant to be shot with scopes, not sights. The triggers are good, but meaningless when the gun is inaccurate.
If you want a .22 Mag, I would buy a Ruger instead.