Note that this is for the TM series rip clip, not the BT series one. It's also for one of the early gen TM rip clips, the particular problem I was having may have been fixed in later models.
I'll keep it to the point: I got the hopper for my TM15 shortly after my local proshop got them in. It was a waste of money.
This thing jams CONSTANTLY. Jams with new paint, old paint, rec grade, tourny grade, Jams with the Tippmann low profile hopper, jams with the stock hopper. fresh batteries, cleaned, everything. it jams incessantly. and it's not a case of the mic not being sensative enough- it's a case of paint actually jamming on the feedwheel. or not dropping onto the feedwheel. or any of a half dozen other faults.
Similarly, the BT reps I've talked to insist it's bad paint/old batteries, and after being demonstrated wrong will simply say "huh, guess you just got a lemon"
Given *MY* experiences with it, I can't recommend this hopper to anyone.