Reptilia AUS 30mm Optic Mount,1.54 inch Height, MIL-STD, M1913 Picatinny Compatible (Black Anodized)Reptilia AUS 30mm Optic Mount 1. 54 inch Height, MIL STD, M1913 Picatinny Compatible (Black Anodized) The Reptilia AUS Mount is a precision engineered solution for 30mm magnified optics. Driven by the request of an end user group, the AUS Mount is the culmination of a 2 year development program. Built with durability and performance in mind, the AUS Mount securely attaches to any M1913 Picatinny rail using our anti snag, spring loaded nitrided steel