I made an Avenger style holster for my G22 with a M6 attached. I didn't make a pattern, I just cut a square of leather oversized, folded it in half and wet molded it to the weapon/light combo After it dried I opened it up and stiched the mouth/belt loop piece on, glued and stiched around the triggerguard, then trimmed the excess leather off and stiched the edge. I took the long way around doing it, but I wasn't really sure of how to make a pattern for that style.