Primary Arms SLx Top Cap Reflex Mount Features The Primary Arms SLx Top Cap Reflex Mount attaches to the top of a 30mm SLx scope mount allowing a mini reflex sight to ride at the 12 o clock position directly above the main optic. This setup lets a shooter simply raise their head to transition from a magnified scope to a fast red dot for close quarters engagements rather than switching optics entirely. When used on the 30mm SLx 1.5 inch mount the top cap places the base of the red dot at a 2.04 inch height keeping the sight within easy reach of the shooter s natural eye line. This co-witness style setup speeds up target transitions in dynamic multi distance shooting scenarios. Machined from 6061 aluminum the mount is built to hold zero through repeated use and recoil without shifting out of alignment. Its footprint is compatible with the Primary Arms Classic Series 24mm Mini Reflex Sight as well as any other optic sharing the Holosun 407C or 507C footprint giving shooters flexibility in choosing a reflex sight. The black hardcoat anodized finish resists scratching and corrosion across range sessions and field carry. Backed by the Primary Arms Lifetime Warranty this mount is a dependable way to add a secondary reflex sight to an existing 30mm scope setup available for sale at GrabAGun. Primary Arms SLx Top Cap Reflex Mount Specifications Manufacturer: Primary Arms Model: SLx Top Cap Reflex Mount Type: Mount Tube Diameter: 30mm Material: Aluminum Finish: Hardcoat Anodized Color: Black Height: 2.04 Weight: 1.02 oz Compatible Hosts: Holosun 407C / 507C Available At: GrabAGun