I placed this "round top" Brno next to another that I acquired. The later "47 gun does not have a stripper clip guide machined into the rear bridge. It has the "boss" for it but it was not cut. I have other post-war roundtops and I examined a number of others. This is the only one I have seen without this feature. If you have a pre-1949 Brno Model 21 or 22, please check it to see if there are others without the stripper clip guide machined into the rear bridge.

John