That then leaves me my head scratching, since I had purchased the shown "RALS4" marked scope rings - but they are too wide on bottom and can't be fixed on this rifle! As I've mentioned in my starting post it appears that the top of the bases are 12mm broad, while the rings I bought seem to be for the 19mm dovetail?!



Edit: as a small side note, despite being a No. 4 rifle the particular shown rifle is a governmental sniper rifle - I have not found out the origin yet, but it's wearing the same stock as a No. 4 T (with cheek pad) and also has a scope serial on the stock like a No. 4 T.