Eviioiive

Does the Thompson firing pin need to protrude as much as it does? Seems like it protrudes more than my other firearms and if it were shorter maybe wouldnt break as easily

Recently picked up my 27 SBR after a year wait and its headed back for repair. After 150 rounds the bolt face is deforming and no longer picks up the left round. Right side and drums are gtg. Rear sight barely has a notch in it and the rear grip was over cut on one side and under on the other.