GrandMasters L.L.C., Gunsmithing, Ruger 10-22, AK-47, Ruger, AR-15, Ruger Accessories Extended Safety for Browning Hi Power - Blue [CS035] - This safely allows the right handed shooter to safely engage or disengage the safety with the thumb of the shooting hand. A must for duty/carry guns.
www.powercustom.com
NOTE: I have no experience with either of the above parts.