^^ Dean, that is one beautiful MP5. .... (it is an MP5 right?)
It's actually an MP5K PDW with Gemtech MK-9K Suppressor.
Or if you want to get real technical it's a SBR HK SP89, with a PDW barrel installed, and a Qualified registered sear in a Navy trigger pack. The folding stock is a Brugger and Thomet and the optic is an Aimpoint T1.