Patent ID: 7691759

Claim:
A barrel system for a painthall gun, comprising: a barrel body comprising a breech portion and a muzzle portion, said breech portion having threads that removably engage a breech end of a paintball gun and further having a first bore diameter, and said muzzle portion having a second bore diameter, wherein the first bore diameter is larger than the second bore diameter to removably receive a barrel insert therein; and a plurality of barrel inserts each configured to be arranged primarily within the first bore diameter of the breech portion of the barrel body, wherein each barrel insert has an insert bore having a diameter sized to accommodate a paintball therein and permit the paintball to travel therethrough, and wherein each bore diameter is different in size from diameters of one or more of the insert bores of the other barrel inserts, and wherein each barrel insert comprises size indicia to indicate a size of the insert bore.