This rifle was historically seen as the "first sporting rifle" model built by Zbrojovka Brno AS after WW2.
The model designation ZKM 451 indicates it to be a Koucky ( pronounced Koutski) brothers design of 1951 after Fanticek and Josef Koucky
CZ Straconice built a single shot .22 rifle called the CZ242 at the same time. This was a rimfire built on a Split rear bridge Mannlicher action.
Though the ZKM 451 first appeared in 1951 there were pre war sporters already in production in the form of the Models 721 and 722 ( 21H and 22F) as well as the Galas rifle ZG47 designed in 1947 but only built in 1950.
Here is a parts list of the ZKW 451 No. 1 rifle
Barrel assembly
Breech bolt assembly:
Trigger assembly:
Stock assembly:
