Introducing the AUS Mount for 30mm diameter magnified optics, from Reptilia. Driven by the request of an end user group, the AUS Mount is the culmination of a 2 year development program. Like our DOT Mount line the AUS Mount attaches to any M1913 Picatinny rail via our anti-snag spring-loaded nitrided steel clamp and custom bolt mounting system which can be tightened with either a 5/32 hex or a flat blade driver to sit flush with the body of the mount for a low-profile, streamline design. Also like our DOT Mount line, the AUS mount is machined from a single piece of billet 7075-T6 aluminum and is finished with MIL-STD Type III, Class 2, hard anodize coating. The AUS is compatible with all of our existing 30mm ROF line, and will be compatible with several new ROF products launching over the coming months. Like all Reptilia products, the AUS Mount is 100% made in the USA and carries a full lifetime warranty against manufacturer defects. Machined from billet 7075-T6 aluminum MIL-STD, Type III, hardcoat anodized 158 grams 30mm diameter bore 39mm (1.54 inch) bore height Up to 77mm objective will clear flat-top Picatinny Made in USA