942 from a 642

B

Brian Williams

New member
942 from a 642, I got 1 and there are very few others

I remember seeing a picture of a 642 that someone had a 940 cylinder fitted in. Was that here or on THR or S&W forum. How is it working if so???
 
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Well, this is kinda close to what you asked about: I have a Model 37 to which I fitted a 9mm (940) cylinder.
Btw, cylinders come from the factory with several dimensions oversize, so it took me a few hours of fitting to install it. Not recommended if you're not a pretty fair DIY person with guns.
Since this gun (named it a "Model 937") is an airweight, I shoot fairly light reloads through it for practice. Seems to work just fine, with no binding during the firing or loading/unloading. Some folks complained of this kind of snafu with the model 940s but no such problems here.
Anything other questions, feel free to ask.
 
Well I finally broke down and got me a 642 and it is now a 942. I got a used 642-0 and it was conditional that my 940 cylinder would fit in, the Gun shop guy took the 38 spec cylinder off and allowed me to install my 940 cylinder and it fit perfectly. the cylinders line up nicely and it lock up tight as a drum. I put on a Tyler T grip and some real nice walnut diamond magna's on it and it disappeared in my pocket.
 
Gents, can I ask where you got the 940 cilinders and how much they set you back? I have a 60 and a 640 and would LOVE to convert one to 9mm. ( I have a 3' Ruger SP101 in 9 that's a favorite but a little heavy/long for carry.)
 
Tacoma, in my case the friendly local gunsmith (who's a Smith and Wesson certified armorer of long standing) ordered a cylinder from the factory. He offered to fit it up for me, but I decided to do it myself. When I showed the completed project to the FLG, he said he might not have ordered the cylinder for me if he'd known it was going in an Airweight. I told him it would be used with light handloads for practice, and other than five Hydroshocks to check POI vs. POA, that's been the case.
 
Mine came from my 940. I have talked to a smith who has reamed the charge holes in a couple of 642s to 9mm and has had no problems other than spliting some of the brass when he shot 38 in it.
 
940 was a concealed hammer snubnosed j frame S&W revolver similar to the 640 only it was chambered in 9mm vs 38/357. They are no longer in production and command a high price when you find one.
 
You yankin' our chain here Scott Auld? We don't see a Smith wheel gun slip under YOUR radar very often. Anyhow, the 940 wasn't in production too long, and S&W seemed almost anxious to stop production, as memory serves.
 
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