theres nowt wrong with a rapid 7 its down to the person useing it.if theres problems with o ring or air leak from around the bottle is probably someone as either trying to take bottle off when its stil got plenty air in it or not dry fireing when remove the bottle.haue to admit the 7 shot mags are rubbish but the 12 mag no problems with them.ive had 2 rapids in past .no problems with either.