Chronographs for paintball markers used to measure the speed of paintballs; paintball protective masks; helmet systems, comprised primarily of safety helmets and protective face shields for use in paintball; goggle systems, comprised primarily of safety goggles for use in paintball; paintball helmet and goggle systems, comprised primarily of safety helmets, safety goggles, and protective visors; pressurized air tanks for use in paintball; protective clothing for use in paintball; telescopic sights, namely, paintball marker sights and paintball marker targeting devices; pressure regulators for paintball markers