its a system... anything will go through... but i use big ball, marbs, all stars, hellfire, inferno, blaze, and anything that will fire good.
It has never let me down. It has never broken a ball for me. It shoots level for about 130 feet (just a guess) but i know for sure that i've shot it a 100ft with the accuracy of a circle of balls within 5 inches. it doesn't lob nor does it sink the balls. Very quite and accurate. Plus i think it looks super sharp!! Because of its milling it blends in with the milling on my matrix. The price is well worth it.
the 5 piece kit has too many backs.... you don;t need the extra small one and extra big bore size... i haven't some across a ball that the 3 piece kit can't handle.... Its aluminum, so watch out and don't scratch the inside of it.
Get the three piece kit cuz you don;t need the extra 2 backs that the 5 piece kit has. its better than a boomy cuz of its accuracy and a boomy can only handle one size of a ball.