Sport 30mm Single Cantilever Ring Lower 1/3 Co-Witness - 40mm

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 lower 1/3 co-witness mounting height of 40 mm. Will work with most 30 mm red dot sights.