The MP5 is still the gold standards as far as I am concerned, but at least the sub-machine gun is still kicking.
The gun is chambered in 9x19mm NATO. It features a 12" barrel and has a total length of 25". It weights 6.28 lbs (including magazine). I am guessing that the magazine pictured is Beretta's 30 round magazine. I could be wrong, but it looks to me like the barrel is threaded for a suppressor and a thread protector has been screwed on.