While I have not shot the bersa .40, I do own the bersa 9mm. Actually I conceal carry the Bersa Ultra Compact 9mm. Its a slightly shorter barrel and hand grip. Its about the same frame size as the bersa 380 but a bit wider. I bought this gun because I am in college and 300 dollars sounded right for a good handgun. I would say without question that it is the best 300 dollar handgun I have ever shot. Not to say I have not shot better guns, but in the 300 range for a 9mm, its my favorite. The grip is just a tad wide for my small hands, but comfortable enough that I fit it for shooting. The Bersa 9 UC comes with a 13 round 9mm mag that fits flush with the handle. The 17 round mags fro the full size model also fit this model and all my spare mags are the 17 round version. I fed alot of different rounds through it and I have yet to see a ftf problem that was not due to bad shooting. I tried to get it to ftf, just to see were it sits. It is not particular on the ammo whatsoever. Accuracy is fair for a 25-30 feet gun. Offhand at 25 yards I can still hit dead center. Any error is my own. GRRR. It is DA/SA which may take you time to get used to if your not. The DA pull is smooth but a tad longer than some. Its a lighter pull weight than many DA. Never measured it for sure, it feels lighter though. The break is clean, however. Personally I have heard many issues with the 380 model, but a rather low amount of issues with the 9, 40 or 45. The whole design is much more classic to autos in general. The safety is logical and works well. There is a safety key lock on the gun, I've never touched it. Don't need to. Expect general wear and problems if you treat this like its one of the more expensive bomb proof cousins. Clean it after you shoot and care for it and it will care for you. Recoil is felt more with this than many other 9mm I have shot, some has to do with the design other with my small hands to a larger grip. There is an adaptable weaver mount for the mount on the gun as it stands. I think thats about all I can think of. I trust it with my life with no problems. Ask away if you have more questions. I usually carry it in a smart carry or superslide depending on the level of concealment. It hides well on the body. Thats about all I can think about. The bersa 40 is an exact copy just scaled up for a larger caliber. I would assume from what I have heard that you just need to replace 40 with every place I have put 9mm except for round capacity.