I ordered a new condition South African Uzi bayonet, scabbard, and frog from Vector when I bought my FA gun new. These were made by Littleton Engineering in SA, as the SA Uzis were. I figured it would fit the Vector just fine, but it turns out that the bayonet is basically unusable. It's easily mounted, but for some reason, it then sticks an place and is almost impossible to remove. Since it's an accessory that I don't much care about using, I have not bothered with sending the gun/bayonet back for warranty work. Everything else that I bought from Vector fits to perfection, including the .22 conversion kit and magazines, OD stock and grip set, and wooden butt stock.
I gotta say, the Uzi looks kinda silly with a bayonet mounted up. My first thought was that if I needed it, I've let the bad guys get way too close! But then again, it would be perfect for prodding POWs.