This is the EVVA DPI -- Also know as the old version of the DPI (the new version has sliders and two sidebars!). Thanks to BosnianBill for sending me this great lock! Lots of challenges in one package including a tricky keyway, tight tolerances, security pins, a passive sidebar with an active element, and a trap pin! All of that said, these locks don't have to be difficult if you have the right tools and are armed with a little foreknowledge.
