http://www.armoryblog.com/firearms/rifles/japanese-garand-semiauto-rifle/ Below is the Pederson rifles that predated the garand but wernt accepted.
However by 1931 the Garand rifle was ahead in the race in US trials, and by 1932 the Pedersen rifle completely fell out of favor of testing board, which clearly preferred the gas operated Garand design. In mid-1930s Pedersen rifles of domestic manufacture were tested in Japan. Chambered for Japanese standard 6.5x50SR ammunition, these weapons were made in very limited numbers and in two distinctive versions – a rifle with one piece wooden stock and rotary-type magazine with 10-round capacity, and a carbine with two-piece wooden stock and detachable box magazine with 5-round capacity. After some testing these rifles were rejected by Japanese army.........."So they say" the bottom picture is a Pederson captured in the Philippines with no makers markings just a Jap Kanji for safe next to safety lever, A MASH Doc pick'd this one out a pile of surrenderd arms and guess what he picked?? a 6.5mm Jap Pederson!!
I was'nt able to find any info on at all on the Type 4, any refrence says its the Type 5 Garand Copy, still this obscure photo bucket shows the Type 4- 20round mag fed?
I wonder if you collect Pederson Rifles..............Does that make you a Pederphile?