I installed a maple leaf bucking and a m95 spring. Shoots .9 to 1 joule. Optic not included. Amazing gun i was gonna upgrade it futher but it shoots good with just a bucking swap. Shoots fast since it is installed with a microswitch trigger. Around 17-19 rps on 11.1. Great range. I use .30 gram bbs but .25 works great as well for cqb. I can include a high fps spring if u message me. Will come with one mag. I have extra if needed. Shooting video available. Very unique gun and it's discontinued, so it will get harder to find over time.