Quick view Compare Optic Mounting Plate for Ruger 57/ Ruger 5.7 - Compatible with Trijicon RMR/SRO, Holosun HS407C/HS507C/HS508T, Riton X3 Tactix PRD, Swampox Kingslayer/Liberty/Justice, RD3-019 Stingray, ADE RD3-020 Raptor, RD3-022 Artemis, RD3-023 Valkyrie, RD3-029 + 1 reviews MSRP: Was: On Sale $29.99 Add to Cart