Ok, the back story. I bought an HK93 that someone had installed a PSG1 trigger group into it. I sold the trigger group and bought a standard 93 trigger group. I kept the safety selector lever that was in the PSG1 group and installed it into the 93 group. It fits and moves fine but the rifle will not fire - like it is on safe. Remove the selector and the rifle fires fine. I'm sure I just need to buy a standard 93 selector lever but I wondered what the lever is pictured below. I can seem to itentify it on any HK parts website. Just curious what it is. Sorry, photography is not my strong suit.