[I can hear the old timers here gnashing their teeth] 
At the risk of being scorned, can you provide a pic, Duane???
I know it's not always convenient to carry a mini-cam with you, but even my BlackBerry takes a fairly good pic and most sellers have no problem if they see you pull out a phone...(I guess they think it's instant approval for a sale)...
I have an M40, and read here some year ago that a Luger stock would fit...That's not quite true - the locking notch is in a different position...and although I don't have a Luger stock, I don't think it's an easy task to slip the stock on...(If it will go on at all)...