GEN II 30mm cantilever scope mount with lightweight upper rings and 45° offset rail

Magnifier features a quick focus ring to keep the image in focus

but it does have its benefits in the form of power and efficiency

The slide reciprocates (blows back)

NcStar 3X Magnifier w/Flip to Side QR Mount Wadsn GEN II 30mm cantilever scope3X Magnifier with Flip to Side Quick Release Mount. This Magnifier can be mounted behind a 1X Reflex optic. You can quickly switch between 1X Magnified Optic for close ranges to 3X Magnified optic for intermediate to longer ranges, with a push of a button and a simple flip to side movement of the magnifier. Magnifier features a quick focus ring to keep the image in focus. Elevation and Windage adjustments with turret caps, to center your reflex optics