B-SQUARE DOVETAIL RNGS 1IN LOW MT

I've purchased these rings for several different guns. On generic bases that say things like "weaver" or "Picatinny style" these rings fit like a glove since they are most likely (Chinese)20mm and not (American) .835-inches. I dropped a sub-minute .30-06 garage chopped rifle on its scope, and these cheep crappy aluminum b-square rings have held their zero. On the other hand, I've destroyed these rings trying to tighten them down and make them fit on good quality Mil-Std 1913 Picatinny rails. Either buy these rings and go cheap all-the-way or buy higher end rings and go expensive all-the-way. But don't put these rings on high-quality REAL Mil-Std 1913 Picatinny bases.... By-the-way, Yes... I have kept these rings on the above mentioned sub-minute rifle, cause if it ain't broke...