Monstrum Sentry Micro Red Dot Riser Mount Absolute Co-Witness Venom Footprint Black. The base mounts to standard picatinny mounting platforms. While the red dot mount attaches directly to the red dot base using either Venom or RMR red dot footprint pattern based on your selection. Specifications for Monstrum Sentry Micro Red Dot Riser Mount: Manufacturer: Monstrum Color: Black Finish: Hard Anodized Gun Type: Rifle Fabric/Material: 6061 Aircraft Grade Aluminum Co-Witness: Absolute Red Dot Sights-Footprint: RMR Optic Cut: Not Applicable Hand: Ambidextrous Length: 1.42 in Width: 1.43 in Height: 2.24 in Weight: 4.11 oz Condition: New Mount Type: Picatinny Features of Monstrum Sentry Micro Red Dot Riser Mount For direct mounting of Venom or RMR standard red dots to Picatinny mounting platforms Single-piece milled to ensure stability and rigidity The mount provides 0.77 inches of rise measured from the base of the mount to the red dot mounting surface allowing for absolute co-witness with the standard A2 sights The side frame housing provides an added layer of protection for your valuable optic against drops and scrapes Package Contents: Monstrum Sentry Micro Red Dot Riser Mount Monstrum ZD30V: Sentry Micro Red Dot Riser Mount Absolute Co-Witness Venom Footprint Black