P50 Picatinny Adapter 1913This machined aluminum adapter adds a 1913 Picatinny rail section to the rear of any P50 pistol or R50 rifle which can be utilized to mount any side-folding stocks or braces. Durable, lightweight design - Precision machined aluminum Secure installation - Includes all necessary mounting hardware Compatible - Works with any stock or brace designed for 1913 Picatinny rails Stock/brace not included.