The VetGun is a handheld, CO2-powered launcher built to fire single-dose insecticide capsules onto cattle from roughly 15 to 30 feet away. It is engineered with rugged, field-ready materials to withstand routine ranch use and repeated firing. The system works with compatible VetCap capsules, which are sold separately and burst on contact to release their contents onto the animal's coat. A complete kit includes the VetGun applicator, a feeder tube, adaptors for both 25 gram and 90 gram CO2 cartridges, a spare O-ring set, a cleaning squeegee, and an operation manual. Before loading capsules, the unit should be dry-fired once the CO2 canister and correct adaptor are attached, following the included manual. Regular care involves checking the O-rings and cleaning the barrel to keep the device firing consistently over time. CO2 cartridges and VetCaps themselves are purchased separately from the applicator.