im new to paintball and i don't know what the heck auto-cockers and auto-mags are!and also, what are the advantages of those bolts that cock back? like they're outside of the gun? if they do a lot i want one lol. also, i got a new barrel for my spyder, it's a 32 degrees night stick 16" and i have a spyder java 2 in 1 and i'm not sure which paint is the best, someone want to please help me out?