Sightron L Shape Ring Mount for Pistol Scope Black. This Sightron L Shape Ring Mount for Pistol Scope is for picatinny rails only and is compatible with S30 Electronic Sighting Device and S33 Electronic Sighting Devices. Specifications for Sightron L Shape Ring Mount for PistolScope: Manufacturer: Sightron Gun Rail: Picatinny Fabric/Material: Steel Color: Black Tube Diameter: 30 - 33 mm Ring Height: Various Length: 3.75 in Included Accessories: Inserts Weight: 3 oz Fit: Picatanny Rail Diameter: 33 - 30 mm Hand: Ambidextrous Gun Type: Pistol Finish: Black Matte Features of Sightron L Shape Ring Mount for Pistol Scope: Durable all aluminum machined mount Ideal for mounting red dot sights on a picatinny rail Single L shaped For 30 and 33mm scope tubes Package Contents: Sightron L Shape Ring Mount for PistolScope Sightron 72004: L Shape Ring Mount for Pistol Scope Black