I have no experience with the .45 version of the Zastava, but the 9mm I bought sucked pond water. I've got 10 hours of rail polishing time in... grinding down "bumps" in the slide machining, and smoothing out machinery work on parts that looked like it was done with a hammer and chisel.
If I didn't learn anything else about Zastavas, it's to take them apart before you buy one and look at the machine work INSIDE the gun. The 9mm that I bought looks great on the outside, but it's total junk on the inside. I consider it a $265 paperweight, and would feel guilty selling it to anybody.
I make it plain that I might have bought the only one that was made on a monday morning or friday afternoon, but I've got a lot of gunsmithing time in on mine, and still can't get it to run smoothly... plus, it shoots all over the place. I can shoot that gun and it sprays all over the target... take my other 9's and blow out the X-ring.
Some of it could be ammo, but I've run half a dozen different loads through it, and haven't found one yet that wanted to go straight or didn't find a way to FTF. I wouldn't carry mine as a personal protection weapon unless I knew I could push it against the target and pull the trigger... and that's iffy...
They've had several people who have posted target pictures and narratives here that swear by the Zastava. To me, Zastava is how you spell "junk" in Serbian.
WT