Here is some photos of some Norwegian HKs. (from digitaltmuseum.no)
MSG 90 serial 0403
HK 21 Serial 00518 and 00519 from testing in the 1980s.
HK g3 19201 from 1960.Trail gun.
HK MP5 sn.80024 Trail gun.
HK MP5 SN.N17813 Norwegian series.
HK AG-C 40mm sn.59-001300 modified for use with buttstock.
HK AG-C SN.59-001115 For use With The C8.
HK SIG P2A1 26.5mm sn.51442.
MSG 90 serial 0403
HK 21 Serial 00518 and 00519 from testing in the 1980s.
HK g3 19201 from 1960.Trail gun.
HK MP5 sn.80024 Trail gun.
HK MP5 SN.N17813 Norwegian series.
HK AG-C 40mm sn.59-001300 modified for use with buttstock.
HK AG-C SN.59-001115 For use With The C8.
HK SIG P2A1 26.5mm sn.51442.