It is indeed a Chinese-marked Murata 22
Thanks for the correction. Some places called it a type 20 others a type 22 so it gets confusing sometimes. All in all I think this gun`s pretty rare seeing as how it is the cavalry carbine version (two of the ones I saw were normal rifles, the other was a cavalry carbine but missing a bolt). I wish I could find a gun like that. Congrats on your beautiful find!!!