I first saw a couple of those at the Chilliwack gun show in 2023. One of the owners of Corwin Arms, was sellng them, along with new in wrap M48s.
I opted for the new in wrap M48 and was scratching my head over the sporter. I wasn't sure if it was a factory job or not.
It was just like the one in your pics and very tempting. Sadly, I passed. There have been a few more for sale, online, but I've passed on those as well. I already have a couple of 8x57 sporters that shoot better than I can hold.
They are very nicely done IMHO, about as little as can be done to original military stock rifles and still retain the appeal.
I liked that they are drilled and tapped for scopes, nice touch.
Nice rifle, how well does it shoot? Have you tried handloads yet or just factory fodder?
They're very strong actions, so you should be able to load them fairly hot.
DGY has thread on the gunsmith forum, concerning a K98 he rechambered to 8mm-06. I'm not suggesting that you should do such a conversion but he did some testing with CFE223 powder under 200 grain bullets which gave him very decent velocities.
I am going to try some of that powder in my 8x57 loads, under 200 grain bullets to see how much if any difference there is over what I'm getting now in velocity.
Just for fun of course, likely not much difference.