Vortex Cantilever 30 mm Single Ring (37 mm Absolute Co-Witness) MPN CM-305

Provides extra rail room for rear Back Up Iron Sights (BUIS) when using the StrikeFire red dot along with the VMX-3T magnifier. The cantilever ring will move the StrikeFire forward about one inch.

Note: Provides absolute co-witness mounting height of 37 mm. Will work with most 30 mm red dot sights.