Grub cap as shown, applicable to certain KWC blowback models.
Manufactured for mould-cast plastic w/ two-point retained hexagonal cut-out for use in conjunction w/ the allen key that came standard w/ the KWC pistol in question. Thread: M21 x 1.25 x 9 male, compatible w/ 6.5mm hex drive / allen key.
KWC MAGAZINE BOTTOM CAP Bottom cap for the magazine of bb pistols. DESCRIPTION Type: Internal Parts Manufacturer: KWC Color: Black CO2 cartridge is secured by the cap High quality bottom cap spare or replacement