Quote Originally Posted by Defaultmp3 View Post
The problem is the "in general" part. With a stock/brace that short, you're super scrunched up; I don't find that to be conducive to shooting outside of standing on a flat range with no movement, or possibly barricade work. As for being a better platform for optics, I don't see any major advantages over an optic ready handgun. If reciprocation is such a big deal, you could always get a rail mount, à la ALG 6SM or other open-gun-type options. You can't easily mount a WML on it except at the 1200, and then with as short as the handguard is, switchology will be wonky. The barrel is 3.5", not 7.5". There is no real way to attach a suppressor, given that it has an integrated flash hider. The magazine it ships with is a 20 rounder; pretty easy to fit in a larger mag for a pistol.
So I've done the shooting under, around and over with a MP5K and a MP5K-PDW, I will take the "short, scrunched up" stock every time.

As far as optics, when was the last time you put a Eo XPS2 on a handgun?

As far as barrels, I was discussing most PDW platforms, not this one specifically.