Walker akazotamira kuSouth Africa, achiunza magadzirirwo eStriker pfuti. Pfuti yake yakabudirira, uye yakaendeswa kunzvimbo dzakasiyana siyana dzenyika. Kunyangwe yaive yakabudirira, pfuti iyi ichiri nezvikanganiso. Iyo rotary cylinder-mhando magazini yaive yakakura, yaive nenguva refu yekuzadza, uye chiito chepakutanga chakanga chisina zvimwe zvikanganiso.Walker akagadzirisazve chombo chake muna 1989, achibvisa masirinda anotenderera, uye achiwedzera auto cartridge ejection system. Pfuti nyowani iyi yakatumidzwa kuti Protecta.
kugadzirwa kwepfuti yeStriker