okay im going to say 4 things about this gun,
1. buy nitrogen
2. buy standard mags
4. Follow ALL of the rules above and you will not regret this gun!
i know nitro is better, although i dont play in the winter (so i use co2 mostly) b it is still betterthan co2. i have 2 of these guns, and tapped the smallest oz. tank on the back and poured a wet-mold over them to make holsters,(which took 1 month to craft to perfection)but now i will assure you that everyone IS afraid when i draw 2 mac-10 style handguns in there face. not only that but this gun IS loud. WARNING: opponents will run away when they hear this weapon!
in a nutshell:BUY THIS GUN
maitnence is requiered. i like to toy around w/ my guns so its not a draw back for me, but some people are just lazy.
nitro is GOOD.