Hopefully one of you fine folks will be able to answer this. I've looked everywhere and cannot find out what the letters WR together at the end of Sigs model codes means. For example W226-9-SP WR
I know what the rest of the code refers to but I am stumped on the last two letters.
Any help would be greatly appreciated.
I know what the rest of the code refers to but I am stumped on the last two letters.
Any help would be greatly appreciated.


















































