Pedzisa mutsara unotevera: Pakazosvika 1906, United States yakaongorora mapistori anoverengeka anogadzirwa mudzimba nokunze, kusanganisira Colt M1900, Steyr Mannlicher M1894, uye chinyorwa chinobva kuna Mauser. Kunyange zvazvo Springfield Armory yakanga yatenga 7.65×21mm Parabellum pfuti nokuda kwemiedzo miviri yakaparadzana mumunda muna 1900 na1902, zviremera zveU.S. zvakaramba 7.65x21mm cartridge sechinhu chisina simba rakakwana rekushandiswa kwemauto. Muna 1904, nhamba shoma yemapistol eParabellum yakaedzwa ne 9 × 19mm pfuti, asi zviremera zveU.S. zvakare zvakaramba pfuti. Panguva ino, mishumo yekurwa yakawanda isina kunaka yekumira kusingakwani kwesimba reArmy's Colt.38 caliber revolvers yakashandiswa muna 1899-1902
Kupandukira kwePhilippine uye zvakawanikwa zvakaburitswa nevashandi veU.S. Army vakawanikwa kubva kuThompson <unk> LaGarde Tests zvakakonzera kudiwa kwepfuti yemauto mu.45 (11.25mm) caliber.