Just got off the phone for the second time with customer service from Galazan. I had purchased an upper tang screw for one of my Mdl 21's. The bushing that it screws into is a little buggered up and I wanted to know the exact size of the screw so I could buy a tap and clean it up. First guy on the phone says they don't get to talk to anyone in the back. He get a second lady on the phone who explains to me that the screw only fits a Mdl 21. Yea I know that. "Well then it should work". Tell her the situation again that I need to know the size so I can buy a tap. Tells me that no one there knows the size and she will not take the time to take one of the smiths off of the line to find out what the size is. Thanks alot. $5000 dollar gun($10,000 if they are selling it) $15000 if new and you can't take the time to find out if it's a 10-40 or not. Any of you mdl 21 guys know the size? JW