I ran .25s in mine (it will hop .28s but it's a support gun so why wasn't money on heavy BBs?), it takes AAAs to run the mag 4 I think( they will last more than a game day). It has 3 individual hops, it can be accurate to 40ish metres, it can lob over 50 metres just don't expect to hit what you are aiming for. Down sides it's complex and the gearbox casing is a weak point so don't abuse it( parts are almost impossible to get unless you speak Japanese. unless they hurry up and release the Chinese clone), do not run anything over a 7.4v lipo battery, the drum is well built and reliable but it's not auto wind so you need to remember to hit the wind button after long bursts (unless you fancy some electronics work). After all that yes they are really fun and I regret selling mine.