The syringe pairs a UV-resistant polyolefin barrel with metal fittings, including a luer-lock fitting and needle mount built for repeated farm use. A dial on the barrel lets the handler select an injection volume in whole-milliliter increments, so a single draw of fluid can be split into several identical doses delivered with a click-draw-squeeze cycle. The handle and trigger lever are metal and shaped for a secure grip during extended handling sessions, and an elastomeric O-ring in the barrel is formulated to tolerate oil-based and other chemical injectable products. The barrel tip uses a reinforced construction intended to resist cracking or breakage from impact in field conditions. The unit ships as a complete, assembled syringe along with a set of additional colored pushrod knobs that can be swapped in to mark different fluids or dose settings at a glance. Attaching a compatible needle completes setup before use, and the barrel and O-ring assembly can be separated from the metal body for cleaning or replacement.