4570Rick is correct. That trigger arrangement is one of the darnedest "around the corner, down the street" system I know of. Even the Luger is better.
In addition, the BHP hammer has a very deep sear notch, which is amenable to careful polishing with a "knife" stone. It can even be trimmed down considerably without affecting safety or reliability, but I don't recommend a DIY project unless you have experience.
I too don't recommend removing the magazine safety on general principles, but it and the magazines can be smoothed up and a coil or so taken off the spring. With that done, and a bit of grease on the safety, it will still work but have much less effect on the trigger pull.
Other tricks are building up the linkage parts with weld (tricky job) and fitting them carefully. The slide also may need work, as if it is not fitted properly, some trigger pull effort will actually go to raise the slide off the frame rather than toward disengaging the sear.
Jim