The P99's have always been the same way on barrel length: 4 inch in 9mm, 4.2 inch in .40 S&W. All the 9mm P99's that have come to Canada (for purchase by individuals) have been "special run" for Canada. I am assuming Walther/S&W will do the same for these.
What is the deal with pistol anyway? Is it basically a P99 with a more "GLOCK" type trigger?
When I had a P99 "Anti-stress" (AS) in 9mm, I found the trigger a bit hard to get used to. Something simpler might not be a bad idea. All one trigger pull seems to be a huge thing in marketing handguns these days, especially if a company wants to have success competing in the U.S. market against GLOCK.