Jeff
The receiver sight is for a Mauser however I'm thinking of outfitting my model 38 Arisaka with it and refit the front sight of it with a Lyman globe front sight with a Lee Shaver aperture disk. This system works very well on my GEW 98 and makes for an accurate target rifle. The model 38 appears to be similarly accurate so I think I will enjoy it better with good sights I can shoot well.
Yes I will be drilling and tapping it
My apologies for overlooking this for so long. I wasn't mad because it's a "Jap gun" instead of a Mauser. I've just been operating in a fog for a few days.
I'm even more interested now. My dad drug home a homely bubba'd Arisaka a couple years ago and seemed pretty interested in doing something with it. I'd love to see him make it a cast-bullet gun, but I've no room to talk regarding not getting around to finishing a gun project so I haven't pestered him.
That cute little case intrigues me. It's pushing similar weigh bullets at similar velocities to the 30-30 but at better sectional densities. I had an uncle who served in the South Pacific during WWII who would very seldom talked about that experience, but when he did, it was not heroic tales of bravery and honor. It was ugly and messy and most guys figured they'd never survive it. He had a very low opinion of the "Jap guns" because he had developed such profound respect for them. He wasn't scrutinizing chronograph readings and holes in paper.
By the way, this is meant as no disrespect, but at one time, that rear sight would have cost twice what the rifle did - maybe yours did. I remember when Arisakas, Carcanos and even Rolling Blocks were sold dirt cheap with the friendly (and serious) suggestion that "y' cud run a cord up through th' barrel and make a readin' lamp outa that pretty easy..."
I once bought a new-old-stock Williams receiver sight off eBay for $22 for a Remington 740 and made it fit a Rossi 92 357 Carbine. Going from curved to flat is easy though.
EDIT: Oh, shoot, I almost forgot this. There's an ACE Hardware in either of the two small towns north and south of me. ONE of the two actually carries gun screws! They don't have every conceivable configuration, but it's a nice assortment. Each I go in there to get anything else out of that wall of drawers, I include four or six gun screws and 10-32 and 8-32 set screws (in case I get a new LEE mould) and store them in a sectioned Plano lure box. It's saved my bacon (ok, saved a trip to town) numerous times.