Blow Back Masters Nozzle return spring for 4.3 or 5.1 Hi-Capa airsoft pistols. These come in a pack of 3 springs and can be purchased in either a 125% strength spring or a 150% strength spring.
-pack of 3
-choose from 125% or 150% strength
-fits both 4.3 and 5.1 Tokyo Marui Hi-Capa