The DZP Mk2 is an amazing performance blaster for its size. I mean, a sidearm class blaster of this size can do 140FPS+, it is unimaginable and DZP definitely did a very good job with the MK2. But..It is by no means a perfect blaster, in fact in my opinion, it is quite a bad blaster because others than the FPS it can output out of box, it does everything else poorly. Especially the ergonomics of the blaster and the trigger pull. 

This video will address why the DPZ Mk2 trigger is so trashy, jams and generally unreliable. And how I fixed it, hopefully it can provide you with some insights on how you can fix yours! 

PS: This is my personal experience with the DPZ MK2, I fully understand this may be an isolated case, so if yours works perfectly well out of box, thats awesome!