OK you Mauser nuts, I just got some bolt parts from GPC for my Siamese Mauser project. Problem is the cocking piece locks on the firing pin 90° out of position for the bolt sleeve. As you may know the firing pin and bolt sleeve are slotted to prevent the pin from rotating. This is a pic with the cocking piece locked in the wrong position Question is: which parts are incorrect? Firing pin, sleeve and/ or cocking piece?

Assuming they are all Siamese parts, sometimes the cocking piece gets stuck whilst rotating. Hold the pin in a vise and carefully turn the cocking piece with a wrench; rotate it with some oil on it and it will seat itself in. If it cannot be turned with moderate force, then coat the pin with layout dye (or magic marker) and see where the cocking piece is hanging up, and file those places; it will turn around then.
Mauser cocking pieces do not "lock" in one position; they rotate 360.
Do not panic; this is normal; manufacturing tolerances are real.
Or if you can't manage it, send it to me and I will have it fixed in less than a minute.

The cocking piece turns easily, just lines up in the wrong spot when locked. this is in the un-locked position.

OK, I think GPC sent wrong cocking piece.

Sleeve and the firing pin you show are correct for the Siamese Mauser.

Just wrong cocking piece



J Wisner
Life Member American Custom Gunmakers Guild

Yes Siamese bolt shroud firing pin slots are indexed 90 degrees from standard 98s, and then, so are the cocking pieces. So, if you have the correct firing pin and bolt shroud for a Siamese, which from the pics, you do, then you have a standard 98 cocking piece. which won't work.
Siamese firing pin flats are side to side; German ones etc, are flat top to bottom.
See, you already knew all that.

I have to wonder which Mauser the cocking piece would fit.

And Mr Wisner gave you the correct answer whilst I was typing. Hate when that happens.

Any other Mauser. Long firing pin type. But they still work.

Siamese parts and true Mauser 98 parts are not interchangeable.

Siam Mauser and std 98 are not interchangeable . Like posted

Of course the Japanese have to keep things interesting.

Well, here is the difference between the two cocking pieces. Any of you guys have an idea who could make one of the siamese parts? Could it be as easy as cutting and welding the cocker to a 90° position from the original?

Ill make you one for $50.. Send me a PM if you are interested.

.....as I said in your other post, I have a complete Siamese bolt, less extractor, in Vermont if you need it......PM me!!!

Roger

I found one at Ahlmans in Morristown, MN today. Thanks for your help.