While a .22 Mag is a better round than a .25 or .32, it is what it is. With the small barrel you will not get the full potental of the .22 mag round. This looks like a gimmick/toy IMHO. If you want a .22 Mag Pistol you would do better buying a real one, if you want a .22 Mag Rifle you would do even better buying a real one.
Just my .02