For Sale: Ruger factory Ruger Brass Grip Frame (Marked MR-3DB). Overall, the Ruger frame is in nice condition showing minor wear and will fit Old Model/3 Screw Ruger Blackhawk, Super Blackhaks, and Old Armys. Please email with any questions or for additional photos. Buyer to pay shipping (Please add 3% if paying by PayPal). Thanks for looking.