Should the slide lock engage itself when having an empty magazine in the gun simply by pulling the slide back? Or will it only pop the slide lock up if it is chambering the last round while shooting? Reason why I'm asking is I'm looking at a used P32 and while pulling the slide back with an empty magazine it doesn't catch the slide and keep it back. I checked it out and it seems like the feeder in the magazine doesn't seem to be putting enough pressure on the slide lock mechanism to push it up to lock the slide back. I've read on here about having problems with the slide lock and having to take the gun apart and heat up the grip to hold a sping in place or something - does this sound like what is going on with this gun? Or is it normal? BTW - I shot it 49 times yesterday and it functioned 100%. It locked back at the end of each magazine.