Have never handled a P2000 or a P2000SK ever, never seen one in person
I notice the front & backstraps having the texture like a USP has on it's sides
Also the full size P2000s trigger guard is shaped like the USP Compact & the P2000SK's is shaped like the full size USP
The SK also has a finger groove where the full size doesn't.
The P2000 has a more tapered front end than the SK too
Size wise they appear to me to be the same size as a Glock 19 vs a Glock 26
I'm sure they are a bit heavier & beefier, I know the P2000 full size takes a USP Compacts magazines
The differences I see are from an outsider who looks at which holster would work with what
I have been told the P2000 was an upgrade of the USP Compact with it's changeable backstraps + dished out where you're thumb & trigger finger fit
+ having the decocker on the back of the slide
I wonder if there are internals which are the same between the P2000 & the USP Compact like the sear, magazine release, trigger, trigger bar, hammer etc.?
I have what I believe is a holster for a full size USP that I got from an Officer that He used with a P2000/40 & you can tell the P2000 is shorter by about a half an inch/ one centimeter & that my USPc is about 1/4" longer than the P2000 by the holster
Great Pictures ENDER & Deputydave