It's been a little cool so I haven't been out to the range this week. I decided to see if I could measure the protrusion of the firing pin and this is what I found. From the end of the bolt to the top of the firing pin is .0475". I kept that measurement and zeroed the gauge and measured the distance to the bolt face. That measurement was .059". Then I closed the caliper, zeroed the gauge, and measured the distance from the end of the bolt to the bolt face. That measurement was .1065 which is close enough to confirm my first two measurements were essentially correct. I'm not sure how accurate my caliper is, but its close enough for this exercise. The protrusion is .059". Is that in spec?

Measurement to the top of the firing pin.





Measurement to the bolt face with after zeroing the gauge.





Measurement from the front of the bolt to the bolt face.