When I ordered a Jet2 I also ordered a Ruger Mark 4 and pretty much forgot about it. I pulled it out last night and started to shoot it. I now know what the worst trigger in the world feels like. I'm now looking at gunsmith tools to buy for my first tuning try. There are You tube vids showing how to do it so I feel confident that I wont end up with another paper weight, lol. It's just funny to me how wanting to shoot a piece of paper with a pellet becomes a whole new set of skills to learn. BTW, my first car taught me how to be a human transmission jack.