Here's a review of EHPro's Nzonic clone. Unlike most clones, this is not a 1:1 replica. It's much bigger than an actual Nzonic and the firing mechanism is way different. I really didn't care for the button on this mod; the throw is way too long. The build quality is also uneven, with some burrs on the threads. Still, the performance is strong and it's cheap. Full text review here.