S&W 638-3 Schematic Needed

**Xringshooter** · August 26th, 2011, 09:48 AM

I have searched everywhere I can think of and I cannot find a schematic for the 638-3. I am particularly interested in the parts of the lock mechanism. I could probably even use a good clear pdf picture of the internals.

I have checked Brownells, Midway, stevespages, and even called S&W (they will not release schematics any more - their legal dept said no - how the hell can a gunsmith do his job with no drawings).

Any other thoughts?

**tacticalreload** · August 26th, 2011, 12:44 PM

Hunt around on this site to see if you can find something adequate.

http://www.gunpartscorp.com/catalog/...aspx?catid=395

What are you trying to do? By "lock mechanism", are you talking about the IL? The internal lock's function is the same for all models, IIRC.

**Xringshooter** · August 26th, 2011, 01:34 PM

I am talking about the locking mechanism that stops the hammer from being cocked. The owner took the mechanism out and while working on it a pin fell out of the frame (and of course got lost), very near where the mechanism is, back towards the grip almost a straight back from where you lock it. The pin has something to do with the lock mechanism as I can put the gun back together and it will function perfectly, except that there is a hole in the frame that normally the pin goes in to.

Gunparts, Brownells and all the others do not show the -3 version of this gun (with the lock). According to customer service at S&W, they will not release any drawings any more (legal dept stopped this).

If I can't find anything that will give me a part number, I'll probably try fitting with blank drill rod until I find the correct size and use that. Or, if the customer doesn't care and is not putting the lock mechanism back in, I'll fill the hole with JB Weld.