ZCI V2 Stainless Steel Ball Bearing Spring Guide

I got mine a while back, and it came with round alignment pins (the tabs that prevent the whole thing from rotating and moving too much once installed). From the picture it seems they have changed it, but the ones that mine had were too long and had to be filled down, otherwise the gearbox wouldn't shut. Other than that it work fine and does its job (replacing the cheap plastic one I previously had).