[@Bright_Ops]Here a list, feel free to choose:

[u]Japanese[/u]
[list][*][url=http://en.wikipedia.org/wiki/Type_26_revolver]Type 26 Revolver[/url]
[*][url=http://en.wikipedia.org/wiki/Nambu_pistol]Nambu Pistols[/url]
[*][url=http://en.wikipedia.org/wiki/Type_30_rifle]Ariska Type 30 Rifle[/url]
[*][url=http://en.wikipedia.org/wiki/Type_35_rifle]Ariska Type 35 Rifle[/url]
[*][url=http://en.wikipedia.org/wiki/Type_38_rifle]Ariska Type 38 Rifle[/url]
[*][url=http://en.wikipedia.org/wiki/Type_44_carbine]Arisaka Type 44 Carbine[/url]
[*][url=http://en.wikipedia.org/wiki/Murata_rifle]Murata Rifles[/url]
[*][url=http://en.wikipedia.org/wiki/Vickers_machine_gun]Vicker Machine Gun[/url]
[/list]

[u]Russian[/u]
[list][*][url=http://en.wikipedia.org/wiki/Nagant_M1895]Nagant M1895 Revolver[/url]
[*][url=http://en.wikipedia.org/wiki/Berdan_rifle]Berdan Rifles[/url]
[*][url=http://en.wikipedia.org/wiki/Mosin%E2%80%93Nagant]Mosin-Nagant M1891 and M1907[/url]
[*][url=http://en.wikipedia.org/wiki/Madsen_machine_gun]Madsen Machine Gun[/url]
[*][url=http://en.wikipedia.org/wiki/37_mm_trench_gun_M1915]37mm Trench Gun M1915[/url]
[*][url=http://en.wikipedia.org/wiki/9_cm_Mortar_Type_GR]9cm Mortar Type GR[/url][/list]

If you want personal recommendations, I recommend the Nambu, the Type 30, the Type 38, the Nagant, the Madsen and the Type 26 with the 37mm as a support gun