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Discussion Starter #1
I’m trying to compile some data to see when Walther switched to the notched locking block. Might be an interesting tidbit for the Walther FAQ page.

We know that some AC date coded P99's have either. Just interested to see possibly around what serial number they started.

A simple spreadsheet could be compiled which could show a trend. Showing just the first 4 digits should be sufficient without giving too much away.

I'll start.

P99 .40 AC 4158, No Notch
 

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Discussion Starter #7
Thanks guys, that’s great- keep them coming.

Anyone have a post 4158 with a notch. We may be stumbling on something. Walther possibly is reverting back to the original design on the latest batch?
 

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I guess I should've googled it before I asked for help.

For anyone else who is wondering about the 'notch' I found this thread over at Park Cities Tactical.
http://www.parkcitiestactical.com/ubb....#000001

Note, the 'notch' is not the crack that you see, rather the notch that you see below the crack in Mercutio's pictures.

Now that I know what the notch is:
P99 .40 (black) AB 4129, no notch

--Ben
 

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Discussion Starter #12
Hmmm,

AB 4129, No Notch .40

AC 4139, Notch .40

AC 4141, Notch .40

AC 4158, No Notch .40

It Appears all of the Military P99's 9mm's have notches, at least as early as AC 0498 and as late as AC 0511

I can see a trend with the .40 but not the 9mm.

This is good stuff.

 
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