A must buy for any BT user. I have the BT Delta with an electronic trigger. After adding the Rip Clip and an APEX barrel, I now possess a devastating woodsball marker. Don't even think about buying an E-trigger without the Rip Clip. No ball breaks, no miss-fires, and easily keeps up with the E-trigger's 13 bps. I would definitely suggest the Tippmann X7 cyclone hopper instead of the stock.