If I were looking for AMT Backup 380 parts...

[mr ed]

It was explained to me by the guys at AMT that the early guns were a problem, but the later ones worked good.
Since they were basically the first gun company making stainless guns everything was trial and error.
What they eventually figured out was they had to make the guns out of 2 different types
of stainless or hardnesses or something. I forget.
Basically if the 2 rubbing surfaces were the same the metal would rough up and gall.
The really old ones, the OMC's were really bad about it.
One thing they highly recommended was Rig gun products stainless steel lube which I don't know if you can even buy today.
Plus FMJ's that are hot and no JHP's. Those guns are sensitive to limpwristing.

 

[Mad Professor]

That AMT still doesnt run worth a durn. Im thinking of just leaving it at one of those old school smiths to fiddle with till it functions. Maybe R&S? I just hate that I havent gotten an answer on their phone in like 8 years

They didn’t run that well when new.

 

[BlindOne]

Try gunbroker.com I’ve found parts there for an old smith and Wesson Russian 44 cal. and others for different brands.