645, Help! (Long and involves gunsmithing)

[TexasG]

The ambi safety of the 645 always had a problem with its right side lever coming lose and falling out, most of us take it out and apply a small bit of Loctite to it to prevent it.

Now as too the scratches, it's up too you if you want to "buff" them out, me, I'd leave them on as it gives the gun character call them "battle scars"! If you do decide to rub them out get some Scotchbrite pads and follow the grain of the steel. They work wonders on rust spots too!

Also you might want to replace your recoil spring and magazine springs. Dale

Scotch Brite in the "Grey" color is a near match to the brushed factory look. Green Scoth Brite is far to abrasive.

 

[JohnHL]

I just finished running 50 rds. through my stainless 645 yesterday and was standing out front waiting to settle up with the owner and some guy, who is apparently good friends with the owner, was sitting there and I just continued my conservation about recoil, which I have no problems with mine, however, I ordered a stock spring kit, and he starts to explain to me about the physics of recoil as it applies to my 645, as he did this he moved the slide back and moved the hammer as well, showing me his point. I didn't really pay much attention. When I got home, I sprayed the gun down to sit for a while to give me a chance to eat, however I notice the safety was in the safe position and would not move. I took a non metal and tapped the safety lever back to the fire position, it remains in a stuck position. I am wondering if when this guy was showing me his theory, he moved something and a spring came out or something was misaligned somehow. I bought this gun new in 1989-90, and it has less than 500 rds through it. Thoughts?

Hi, cord27! (Do you own a 1927 Cord?)

I cannot imagine what anyone could do with their bare hands to lock up your safety without disassembling your gun. (And I think I have a fair understanding of these actions.)
My best guess is that you may have loosened up some gunk in the area of the manual safety body and especially in its detent plunger and spring when you sprayed it and it resolidified while you were eating.
If you know how, now might be a good time for a detail strip and cleaning. All the more so if you are a regular user of the spray products.

John

 

[Hans Gruber]

This is what makes gun-collecting FUN! You're already on the track...FOLLOW IT and ENJOY!

There are a LOT of reasons slides don't lock back NOT traceable to the slide stop...have you examined those?

The magazine to stop interface may be insufficient for any number of reasons...a new stop MIGHT correct his.

A weak slide stop spring may be the culprit

An oversize slide stop hole, or undersized slide stop pin may be the culprit.

On pistols that use such, a weak slide stop plunger spring may allow the slide stop to bounce around...OR an improperly shaped surface!

That's the FUN of picking up a used pistol

 

[surfgun]

While you're buying parts, might as well include a backstrap. They are plastic, and a solid impact can crack it.

You are confusing the optional 659 blackstrap for the 645. The 645 back strap is aluminum.

 

[nocents]

as TexasG said a GRAY scotchbrite pad and a little lite oil for for lube under the pad will work wonders.on SS....I used Ballistol to clean up the slide on my 3913NL that had got bumped up a little when on duty of the mean streets of Tel Aviv....looks almost factory fresh now