Saw a used, near new, AMT 45 BACKUP for $225 and decided to take a chance.
Read they were somewhat unreliable, so deburred, stoned, buffed, polished all internals, plus ramp and slide/frame channels and rails. Shoots flawlessly.
Smaller than a PPK or a J-frame, it pocket carrys OK but a good belt is required, its a couple of ounces heavier than a PPK.
The AMT is DAO, (hate), robust yet smooth trigger pull, and accurate, see pic, one-inch group, which is much better that I can do with an R9...and its a 45 which is a decent SD round.