Ohhhhhh yeah You need a Bowl. not a pipe, a Bowl-peice for the bong.
You have the slider, but not the bowl. See, you put the bowl (the bowl has a bowl shaped top, and you put a nug in the bowl, and it shouldn't be a huge opening, nothing should fall through even if it's shredded) in the slider, take a hit to fill the chamber, then "pull" the bowl out of the slider, which mimics a carb.
Bowls are cheap. Just gotta make sure it fits your bong.