Doing PM work on an older P225. I have two older Sig branded and marked spring kits on hand. Both have a outer breech block pin measuring 1.50~1.51mm. The pin I just pulled out is 1.40mm. The new pins do NOT want to go in and I don't want to damage the slide.

Worried about the inner pin as well. New ones measure 0.90 and the old one is at 0.80.

What am I looking at?

You’re comparing a used, compressed pin against an unused part, so apples and oranges.

I assumed so but I was worried I was going to have to beat the snot out of to get it in and I wanted to confirm there wasn't an "old type" vs "new type" of the pins.

I did get it sorted. A 3rd hand would have been helpful...

The outer pin is definitely a tight fit. Beveling the leading edge of the pin slightly helps get it started.

Gunsandrovers, you may already know this but better safe than sorry: start the outer pin into the slide with the split toward top of slide. Inner pin, with split pointed toward rails, inserted into outer pin and both are driven in together.

quote:

Originally posted by 10-7 leo:

Something we don't hear much about these days.

quote:

Originally posted by sigfreund:

Something we don't hear much about these days.

True! Although there is no mechanical reason to orient the outer pin in a specific way.

quote:

Originally posted by 10-7 leo:
Gunsandrovers, you may already know this but better safe than sorry: start the outer pin into the slide with the split toward top of slide. Inner pin, with split pointed toward rails, inserted into outer pin and both are driven in together.

LOL. Funny you mentioned that. I knew I wanted to have the split facing up but, being a muppet, I did not account for the slide being upside down in my vice. The pin slots are 90o of each other, but the outer pin has the slot pointed down towards the rail.

With the outpin pin about 40% in, the inner pin was easy going in and the process finished smoothly. Mostly I was worried I was going to gorilla the outer pin in place and damage things.