The KDG Sidelok Modular Optic Mount is the latest addition to the KDG's optic mounts that feature a quick detach design.... "The new KDG Modular Optic Mount is based off the proven Sidelok family of quick detach optic mounts, and features the same user-friendly, toolless design. KDG set out to design a Sidelok mount for all common, tube-style optics that will offer more user-configurable options than what is currently available from competing QD mounts.