The following should be the proper dust caps (aluminum- knurled edge/flat face; steel- knurled edge/circle in face) for the HK 90 Series models:
HK G3 (aluminum)(1962)
HK41 (aluminum)(1965/1966)
HK41 (aluminum)(1972/1974/1975)
HK91 (aluminum)(1974-1980)
HK91 (steel)(1980-1989)
HK911 (steel) (1989)
HKSR9/SR9T/SR9TC (steel) (1990/1993)
HK PSG1 (steel)(1983-2004)
HK43 (aluminum)(1971/1974)
HK93 (aluminum)(1974-1980)
HK93 (steel)(1980-1989)
HK94 (steel) (1982-1989/1991)
HK SP89 (steel) (1989-1990/1992-1993)
Tony
HK G3 (aluminum)(1962)
HK41 (aluminum)(1965/1966)
HK41 (aluminum)(1972/1974/1975)
HK91 (aluminum)(1974-1980)
HK91 (steel)(1980-1989)
HK911 (steel) (1989)
HKSR9/SR9T/SR9TC (steel) (1990/1993)
HK PSG1 (steel)(1983-2004)
HK43 (aluminum)(1971/1974)
HK93 (aluminum)(1974-1980)
HK93 (steel)(1980-1989)
HK94 (steel) (1982-1989/1991)
HK SP89 (steel) (1989-1990/1992-1993)
Tony
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