These adapters all you to use the wide array of optics that are only made for
22mm picatinny weaver on your 11mm dovetail railed airgun. Brands like NC Star,
Walther and BSA Optics are at your finger tips when switching to a weaver rail.
Let alone are you not just getting the ability use the widely available weaver
system you are getting a much more rigid and durable rail system that already
stops scope shift in its tracks.