A projectile syringe has a barrel, a spring loaded power assembly with an attached plunger, a notched plunger shaft terminating in a knob and a breach plug secured to the barrel. The spring loaded power assembly has a cylindrical sleeve with four dissected fingers, two projections on the sleeves outer cylindrical surface securing a compressed compression spring. A cylindrical weight is captured within the sleeve by four fingers. The user attaches a needle and draws a desired amount medicament. The plunger shaft is broken flush against the breech plug. The user attaches a stabilizing tail to the breech plug end and the projectile syringe is aimed at a target animal. Stopping the syringe displaces the cylindrical weight, allowing the four fingers to displace. The proximal projections move inward, allowing the compressed compression spring to expand to the fixed breech plug, pushing the piston to deliver medicament to the animal.
