You will need:
Top handguard, as mentioned.
Magazine guts: floorplate, spring, follower.
Buttplate and 2 screws.
Fifty bucks' worth of parts and you have a very scarce toy worth about 500 clams.
None of these parts are especially hard to get.
Scrub out the bore very well but don't expect nice, shiny Mauser-type rifling. Most of these were rifled under the Metford system and thus do not have sharp edges on their lands or grooves The bores tend to look like a rounded square if you look down the muzzle (not the best viewpoint 70 years ago, mind you!). There is nothing at all wrong with this system of rifling; it lasts well if the grooves are deep (and they were on the Arisakas) and it was especially designed for accurate shooting. Some Aris can be just scary accurate, too.
The 6.5 Arisaka round has received short shrift in this country, mostly because of the scarcity of rifles in which to use the stuff. Nevertheless, it should be an excellent deer round within its range and has abnormally-deep penetration: just what you need for really anchoring game. It is about the power of a .30-30 but far better in bush.
Norma makes ammo, as does Prvi Partizan. Trade-Ex has brass. Dies can be sourced just about anywhere; Lee even makes an inexpensive set. If you are really desperate for brass, you can make your own by opening-out and trimming .220 Swift cases. DROP your powder charge about 10 percent if using Swift brass, though; it is made for super-high pressures. These rifles tend to prefer soft-jacketed bullets; the cheap-o bulk pack Remington 140s work just dandy in my Type 38 Rifle, as do Hornadys. For a Carbine such as yours, I think I would load (VERY judiciously) with 4198 powder and stay away from that awful muzzle flash and the ear-splitting BANG as the "book" powder charge, designed for a 32-inch barrel, burns in the open air.
You have a FINE toy and a very scarce one.
Hope this helps.
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