Below is from another post, but the answer is a magnum exists, it's not a 983 anymore.
"Curiosity got me on the 22's.. out of the following:
XT-22 has 15 rifles, 11 plastic and 2 hardwood, 1 laminate and 1 walnut.
XT-17 showed 9 rifles, 3 plastic, 2 hardwood, and 4 laminate
XT-22Y shows 4 rifles, 2 hardwood and 2 plastic.
That's 28 .22 caliber rifles and only 1 is Walnut! It's a .22 WMR, XT-22MTW...whatever that means. I say lets take a simple concept and screw it up, while we're at it throw in some funny impressive names ...hell, that'll sell them plastic jobbies!"
Scroll down to the bottom and click on the tab. Mr fixit
http://marlinfirearms.com/Firearms/xt/XT22.asp