645 slide stop issues

[missiondude]

Hey all-
I recently bought a used 645 in southern California. These pistols are not on our beloved states "safe handgun" list, so I had to find one in state and do a PPT through an FFL. There were several new in box on gunbroker, but I could not "import" those into Cali. Anyway, I found a pretty good looking 645 for sale and bought it although it had a cheap aftermarket mag. After shooting it, I found that the mag would not trip the slide stop, and the gun would cycle through, rather than stay open after the last round was fired. I bought a new S&W mag, and it seemed to fix the problem, although it does not always keep the slide open after the last round is fired either. It works fine when opening the slide by hand, no round in mag, mag installed in well. While cleaning it, I broke out the calipers and measured the slide stop diameter at .200" The hole in the frame is .208" There appears to be more slop here than my 3rd gen 5904 which measures at .200 for the stop and .205 for the hole. The hole is perfectly round, so I dont necessarily suspect wear of the hole, but I am not sure. Anyone out there with any ideas, or a 645 and a set of calipers to compare?

Thanks

Dave

 

[missiondude]

Hey all-
I recently bought a used 645 in southern California. These pistols are not on our beloved states "safe handgun" list, so I had to find one in state and do a PPT through an FFL. There were several new in box on gunbroker, but I could not "import" those into Cali. Anyway, I found a pretty good looking 645 for sale and bought it although it had a cheap aftermarket mag. After shooting it, I found that the mag would not trip the slide stop, and the gun would cycle through, rather than stay open after the last round was fired. I bought a new S&W mag, and it seemed to fix the problem, although it does not always keep the slide open after the last round is fired either. It works fine when opening the slide by hand, no round in mag, mag installed in well. While cleaning it, I broke out the calipers and measured the slide stop diameter at .200" The hole in the frame is .208" There appears to be more slop here than my 3rd gen 5904 which measures at .200 for the stop and .205 for the hole. The hole is perfectly round, so I dont necessarily suspect wear of the hole, but I am not sure. Anyone out there with any ideas, or a 645 and a set of calipers to compare?

Thanks

Dave

 

[Bruce51]

I had noticed on my 745 that the slide stop wasn't engaging far enough into the slot. It was locking the slide but it could be better. I called S&W and the tech told me to just bend the slide stop. I drilled a hole in a piece of oak and put the slide stop in the hole. I then put the wood in the vise. Using a hammer and another piece of wood I gave the lever a couple of hits. Now the side stop fits fully into the slide cut out. I know that someone has a better way but with the tools at hand this fix worked for my gun. Bruce

 

[ShelbyV8]

Also consider weak ammo or an overpower recoil spring.