Shifty6BR Sergeant Full Member Minuteman Nov 8, 2013 639 642 IL Jun 1, 2020 #1 Jun 1, 2020 #1 Hey guys I have a surgeon 591SA. I need to swap out the firing pin does anybody know if the thread pitch on the shroud is the same as a 700 1/2×13 I think. Thanks.
Hey guys I have a surgeon 591SA. I need to swap out the firing pin does anybody know if the thread pitch on the shroud is the same as a 700 1/2×13 I think. Thanks.
