Hey guys and gals, I have a question about PA gun law...I recently got a new adjustable trigger for my glock 17, when I installed it I had an issue with the safe action piece rubbign on the frame and makign the trigger pull sticky and not smooth, so I removed the safe action center piece...my question is:

IS it illegal to mod a handgun by removing a safety feature?

Also I removed the slash and pretravel on the trigger for more accuracy, this is a range gun I repeat NOT a carry gun...but will removing the pretravel in any way shape or form cause burst fire? I have a 3.5;b trigger mod in addition to the new trigger...Any help with these issues woudl be greatly appreciated, thanks!