I don't know where you would get a manual. I own two of them. I had a trigger job done on one and when it turned out pretty good, I took the other back to have the same work done, and the smith said he would never touch one again. Said that they were a bitch to reassemble and really need severl specialized jigs or tools to be done on a regular basis. Because I found the finish lack (in rust prevention) I though about having one of them hard chromed with a brushed finished. Two of the bigger companies I talked two wanted nothing to do with the BDM. I have though about taking one apart while video taping it, since I have another fully assembled one to compare it to, but I never gotten around to it as I have been smitten by the Glock product of late. If you do find good instrtuctions on complete disassembly, please post the resource here in the future. BTW, I broke a firing pin on mine dry firing it. I always use a snap cap now and have a spare pin on hand. Good Luck