It is a great plinker, not sure who actually designed it. As mentioned, the trigger is horrible out of the box, as is the auto safety. You can access the trigger mechanism without needing a spring compressor. Smooth the components without removing excess material. Shorten the springs too, just a coil or two. It'll give you a much better trigger.Mine actually loves the Winchester alloy pellets, in fact, it is the only airgun I have that shoots them well. Another quirk of this airgun is it is very pellet size sensitive. If you have a tight fitting pellet, it'll shoot very low and very slow. It seems to prefer lighter, looser fitting ammo.