I'm sorry for my bad grammar, with that being said sounding like I'm ignorant.. which I apologize for the non stop sentencing which every question I was asking was all ran together, sitting here now I realize how dumb I sounded... I wanna say I was just trying to find out if mine was missing anything, my gun is new. The reason I needed to know what was inside, a friend took the tank off not sure why, he degassed it, which it came new empty, I went to a friend's and filled it. When I did it held the 4500 psi, when I shoot it it did not seem to have the 99fpe, coming out. so with that said I was seeing if my friend lost something that made it lose psi per shot. Sorry for the questions before and how I sounded. I'm not dumb and I know how much risk there is when it comes to doing anything to theses guns. Also thank you everyone that helped me and did even tho I sounded like I did and I wanna apologize.. I just was trying to make sure my gun wasn't missing something that could hurt me or someone. But thank you Hajimoto I respect your honesty and thank your for helping me realize. That I needed to slow done and be patient. And want u to know that the one time it's been filled, it hasn't since. Gotta make sure everything is there, and yes I haven't been trying to upgrade it or super it up. Just making sure its the gun stock. And thanks for reminding me how dangerous it is and with the way I was being not patient I could of very well hurt my self so thank u