Bersa Mini Fire Storm 40 owner here. I bought it brand new and love it. However, I have always shot it in SA, so I decided to try it DA since I wanted to use it for concealed carry. It will not fire on DA, but will on SA every time. I clean every time I fire it, so I don't think it's a dirt problem. I can't consider it for carry unless I can figure out why it won't fire DA since you can't carry locked and cocked. This is killing me, since it's the perfect size and caliber for concealed carry and since it's inexpensive I don't have to worry about going down on my motorcycle and ruining my $1K EMP.
I can't believe you can't get to the firing pin without removing the rear site.