For FSR only, roundball seems to double feed from time to time (obviously they are for fsr)
But roundball is possible if you wanted to bottom load some round. ... view more
Make sure the mag is packed full! The spring is so strong it can pop fsr and roundball if only half mag is packed. view less
If your using fsr they are a must have.. mags feed perfect if you have issues after purchasing these all you need to do is sand back the door of the mag just a hair sometimes the f... view moresr can get caught and flip. view less
A: Depending on the paint, if it is good strong paint it will be ok. Look at DMAG as well for regular paintball for poor paintball or wet and humid environments.