Copio/pego:
https://www.forgottenweapons.com/family-photo/Gerat 03 – Roller locked variant of the G43
Gerat 04 – A 7.92×33 Kurz version of the Gerat 03
Gerat 06 – Gas operated, roller locked, stamped receiver assault rifle
Gerat 06H – Retarded roller locked, stamped receiver assault rifle, produced as the StG45
CETME – Scaled up retarded, roller locked rifle, developed in Spain – the first mass-production gun in the family
HK91 – The refined version of the CETME
HK93 – The 91 was pretty popular, so why not sell it in 5.56mm too?
MP5 – The standard against which all modern submachineguns are judged
And hiding down in the back, the CZ52 pistol. Because the Czechs just couldn’t use what the Russians told them to.