Your rifle if it is a Type 99 series 22 was made in the last part of 1942. It should have a 3 screw front barrel band,guarded front sight, , rear band the monopod type with monopod, rear sight should be the long range with the anti aircraft wings, it should have a chrome lined bore and the bolt face should also be chromed. it should have a 2 screw rear swivel on butt stock and a cupped metal butt plate if it is still all origional as issued. There should be a mum on the top of the receiver with type 99 in Jap writing. Serial numbers should match on receiver, bolt, safety, firing pin, and on front band on bottom of the bayonet lug. it should have a cleaning rod also .Hope this helps.