Tacfire RDX3M-B: The Tacfire RDX3M magnifier offers the unique ability to extend the effective range of a red dot, reflex, or holographic sights while providing versatility with its integrated flip to side mount. One of the main features of the mount is the ability to flip the optic to the side when magnification is not needed. To operate, simply push the release button on the left side of the optic to flip the magnifier off to the side. The optic will then lock into place. This magnifier has an adjustable diopter focus to achieve a clear, sharp image with any red dot it may be paired with. The RDX3M comes with a riser so the end-user can achieve co-witness with most red dot mounts.