What size of paint balls do spyder paintball guns use?

Answer 1

In U.K, the paintball fields set them at 270 FPS, but when you buy the gun it should be around 300 FPS, you can buy chrongraphs for $10-20 to test the FPS,

Answer 2

Spyder runs on standard .68 caliber paintballs. However they also have a line of .50 caliber markers, but they are by in large unpopular and a pretty rare find.

Answer 3

standard .68 caliber paintballs.