EBR PMRI/G3 PICATINNY RAIL MODEL: PMRI-MR/G3 The PMRI-MR/G3 is a picatinny rail specifically designed for monopod use on MAGPUL® PRS™ GEN-3 stock systems. Allows monopod or sling loops to be mounted Machined from aircraft grade aluminum Utilizes MAGPUL® MLOK® Mil-Spec hard anodized Made in the U.S.A.