Good evening! I haven't had the chance to look over the inside of the PTR91 GI lower. Having the paddle release, does that prevent the lower from being used with an early PTR91? Keeping the axiom of two is one, one is none in mind, I'm looking to get a second one for standalone and/or...

I'm considering the P2000SK, and will probably want both the 9mm and the .40. I've read on the forum the barrels are interchangeable on the P2000SK platform. So I plan to purchase an extra barrel in the .40 caliber. The question I have is if I purchase a P2000SK 9mm, and have the .40 barrel...