I suppose you can call it curiosity, but, I am wondering. The .380 Bersa automatic pistols have gone through several iterations getting to where it is now. One thing that the designers do not appear happy with is the type or style of the slide stop. Some model such as the Thunder series it is hanging off the frame for the whole world to see, yet others such as the Model 83 it is internal and hidden from the adoring public. These are not the only types out there. I am wondering which type has been the most reliable and least prone to breakage and malfunctions.