Posted by Tom Martin on December 22, 2016, 9:40 pm, in reply to "3 postion safety"
It is easier to make a 3 position into a 2 position than to got the other way. There is no difference in the slot in the frame between the two, so small strip of metal wedged into the rear of the slot so as to block the safety blade from moving into therearmost position is all that is required.