bcd 4 98k..what the heck is this?

[Anzac15]

Went looking for a shooter grade 98k today..and I found one.
Now, I just got this one home, its an InterOrdnance import, pinged swastikas, Gustloff Werke coded (bcd 4) absolutely no finish left above wood.
Here is what is matching..front and rear barrel bands, receiver and barrel, even the stock..top and bottom (is this an actual Gustloff stock?)
Bolt is a mixture of German and Czech. But the really wacky thing is the anchor marked extractor!!
I know this is no collector piece by any means..its a shooter..but that anchor marked extractor is the damndest thing I've ever seen on any 98k part. What the heck is it? Did kriegsmarine '98s bear this mark? While I'm at it, where did all these worn finish 98ks come from? It isn't an RC, and doesn't have characteristics of 'Romanian' post war rifles..those, from what I understand, 'ping' the eagles as opposed to grinding them.
Again, I know this is no collector piece, have heard all the stories about the 'Buchenwald connection'...but that anchor mark is really interesting. Would love to hear some thoughts on it. Thanks for reading!

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[matthanne1]

Makes me wonder if Krieghoff marked it, reminds me of their anchor. I'm sure better knowledge will surface.

[Anzac15]

More pics..

[oldfoneguy]

It looks like you have an extractor from a Model 1909 Argentine. My Argy has the same anchor stamp in the same spot on it's extractor and it's all original with matching numbers. - Bill

[Anzac15]

That did occur to me.

[Calif-Steve]

The Argentine extractor will allow rounds to feed directly into the chamber. No need to feed magazine first. Popular in 1960-style Mauser hunting rifles.