Need help identifying my rifle

I recently added a Mauser to my collection of rifles. I found this one at a local gun shop for $500 and bought it. It is stamped 1937 as you can see in the pictures. The only thing I think is weird is the stock, I have never found a picture of a stock like this one. Their is no metal disc in the butt of the stock like I see in most mausers...
https://www.milsurps.com/images/impo...1_151218-1.jpg

https://www.milsurps.com/images/impo...1_152910-1.jpg

https://www.milsurps.com/images/impo...2_095534-1.jpg

https://www.milsurps.com/images/impo...2_095610-1.jpg

https://www.milsurps.com/images/impo...2_095552-1.jpg

German K98 in a Spanish stock by all appearances. Not a good combo.

Yep, Spanish M43 stock.

How about treating it to a replacement surplus stock set? They seem to be in reasonably plentiful supply here in the U.K. at the moment. I don't know what it's like in the States?

Thanks for the answer everyone. I will be looking for a better stock. The rifle shoots really well as is but I agree it's not a good combo. It seems they are plentiful in Europe but finding ones that ship to the US is difficult.
thanks again.

I will update in a few weeks once I hunt down a good stock and do the transplant.. ha there is a few options on ebay at the moment, but it seems the ones in germany cannot be shipped to the US.

The 98k has an integral handguard ring at the front of the rear sight base. Like this---

https://www.milsurps.com/images/impo...12625923-1.jpg

To fit the long handguard as is shown in your photos, one of two things has to be true.

1.A relief cut has been made in the long guard to hide the retaining ring inside it.

2.The retaining ring has been ground off.

Before you spend money on a replacement stock set, you would want to find out if the answer is "2.". Any restoration from that point would require a replacement front sight base.
-----krinko