Redfield invented them, everyone else copied the patent when it expired or maybe it was when they went out of business. They are generic and all will work. I really still prefer to use same brand base and rings but many times have not. Sadly that is the only type bases I've ever found to fit the LW. I hate that generic base/ring combo and use it only when nothing else can be found. These days it's hard enough to find even those for thef LWs so you're stuck with it. Use whatever rings ya want.
