A-5 Flatline. All American Thats all I've used with it.
Too strong for speedball
These work great will the A-5 Flatline and my All American. It has a thick shell so it hardly pops in my Spyder Imagine. But you do occasiionally get bounces with it. I would only use it for woodsball or if you are using a blowback marker at over 700 psi.
Good for Woodsball and Blowbacks. Not speedball material.