Turkish M46 short rifle, probably.
Here's how I determine this:
Firstly, the contour. Only Finnish M39 rifles had a pistol grip. The inletting for the action is not set up for a long narrow single-stack magazine, it's set up for a normal staggered Mauser box. It's a Mauser stock.
The stock has a bolt cut-out, meaning it's a carbine, not a cut-down long rifle, unless it's a super rare German Kar98B or Gew98M conversion, which this is not, because it has no grasping grooves.
Front band is a '93 type. Rifles using this pattern are South American 91, 93, and 95 actions, Spanish 93s and 1916s, Swedish 96 and 38s, and all Turks.
Since the Swedes have grasping grooves, and didn't use the through-the-stock slot for a sling, it's not Swedish.
Spanish carbines didn't have the slot either, and were '93 action. Not a 1916 short rifle stock.
This leaves us South American and Turk. It's too roughly done to be South American, the wood appears to be Beech, which was used heavily by Turks and not at all by South America. The sling slot was only used in a few South American carbines, and as I recall they did not have inlets for a bent bolt.
I also cannot recall off the top of my head any South American carbines that used a '91 rifle pattern bayonet lug rather than a muzzle-cap or '98 style H-band.
Ergo, it's Turk. Then comparing to my Turks, it's Turk. Look for a crescent stamped on the metal somewhere for verification.
Y'all that said Mosin need your eyes checked.