Both guns don’t shoot continuously for several time and cooldown like Gatling and Laser. That mean they only shoot for one time then delay before the next shot.
Chick Acid Gun can shoot from 3, 5, 7 small acid projectiles travelling slightly slow than the egg shot by Gatling Gun. The number of projectiles, reload time depends on difficulty.
Chick Heavy Gun shoot a blazing ball of plasma that travel at a slow to medium speed. It will then getting gradually larger in size over time. Reload time, projectile speed depends on difficulty.
Quick remind: Despite looking like the liquid in bird flu gun, those acid drops didn’t contain viruses, as they’re immediately devastated in such highly corrosive liquid.