Vballs are a revolutionary paintless paintball system.  Use them for practice daily.  They will not harm your equipment and in fact give your barrels a nice cleaning.  The target system allows you to use them safely indoors or outdoors.  Good safety practices are the same as they are for paintballs.  This means do not aim or shoot a paintball gun towards anyone that is not protected with paintball goggles.  Make sure your velocity has been checked.  Buy this system in order to save money while you practice.  Set up a practice arena in your garage.  Be sure to protect walls!!  Vballs are reusable balls and will save you a lot of money.