soap bullet n.— «In addition to the two decade old laser tag systems, the more expensive Simunitions are also being used. These are low powered, paintball bullets. Users often refer to them as “soap bullets.”» —“The Sting...
marker n.— «That’s a good thing, too, as high-end guns, or “markers” in paintball parlance, can fire a projectile up to 300 feet per second.» —“Fort Dodge-based paintball team is ‘all about safety'” by Jesse...