Rock pin.

[Mikey51]

How does this compare with what you guys have found ?. Thanks. Mike.

Information

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[Bruce McAskill]

Mike, I have a type one that is new never used and a type 2 that is used. On the type two the stamping looks to be the same as yours. There is a difference between the type 1 and type 2 in letter size and depth of the stamping.

[painter777]

Hi Mike,
I had to pull the bolt apart to get this picture of my Type I firing pin.
These pics will show a Rock Ola Type I on the left and Type II on the right.
Like Bruce said...You can see a difference in the size of the ROCK OLA letters.
You'll also see on the Type II you have a taper or rise from the rear flat side of the pin to where it meets the round part of the pin.
Yours looks like the one on the right of mine (Type II).
Both show a punch mark on the left side.
Since I pulled the bolt down I pictured the Extractor marking for you also.

Hope this helps,
Cheers,
Charlie-painter777