seen an odd mauser

[Singer B]

I’m no Mauser expert either, but the images look a lot like a Spanish M1916 Mauser that’s been sporterised. A lot of the M1916’s were converted from 1893’s and the receivers were scrubbed and bolts were turned down. Scrubbed receivers were common in the M1916’s converted from 7mm to 7.62. They also cut a gas escape port in the receiver. Some of the M1916’s have cross bolts in the forend but not all do. A lot of them have repairs in the stock wrist where it was common for them to crack. I can’t say I’ve ever seen one with a cross bolt in the wrist before, but perhaps it was used to reinforce a repair. We’ll see what others have to offer, but that would be my guess.

That was my first guess also based upon the shape of the stock. My guess is it would be a later M1916 since it has the flat adjustable rear sight instead if the roller-coaster rear sight.