While cleaning a couple of my BT380 magazines and I found several of them have grouges on the part of the Feeder Platform that indicates no more bullets in the magazine and locks the Slide in the rear position. I filed them smooth but plan on replacing them since most of my magazines are several years old with a bunch of use and everythings else seems to be adjusted correctly.. I checked Eagle Imports (Bersas parts site) and they are out of them. They only cost $3.00 but are out of stock. If anyone knows where I can get some BT380 Feeder Platform please let me know.