I have not seen the barrel mount/power grip I do not think. (Or I just do not recognize the name). I have the "so Smart" laser unit, and the "beamer" light unit. I have one Pictanny/Weaver mount for it (looking for another). Finding anything for wilcox though seems to be like pulling teeth. The reason I am wondering if anyone else here owns one is my laser unit seems to have developed a problem. The little LCD display that shows battery life, and current blink rate mode seems to be a little flaky. Sometimes when I put the battery in, it is on. Sometimes it is off. Then, when it is working if I turn the selector switch (to turn the laser on) the LCD stops working again. The laser (and blink rates) all work fine though. It is REALLY wierd.
I might try to get a hold of wilcox and see if I can get it serviced.