Hex Gen Designs
Hex Gen Designs

Hex Gen Designs

  1. 4 out of 5

    Overall a great kit, with a couple flaws. It makes the MPP much more practical in CQB. Thank you for the free files! One recommendation: The trigger linkage included didn't work for me, at least when printed in PETG. The M3 screw didn't depress the trigger enough, and the linkages and braces flexed too much. I edited the files to make it use an M4 screw, and I made the braces wider (I extended them towards the front of the blaster). I widened the trigger plate track so that M4 nuts can fit in the track and guide the linkage bolt smoothly. This improved the trigger quite a bit. With a trigger return spring installed, the trigger pull is quite heavy, but less spongy than without the kit. Also, the area between the back of the grip and the magwell is a bit cramped for my hands. It's comfortable enough with some padding, but moving the grip maybe only 5-10mm forward would help a lot. Otherwise this is a great kit! I also added a trigger guard and extended the front under-barrel picatinny for a grip / masterkey.