Daniel Defense has expanded our line of optics mounts to offer secure mounting for the most standard size scopes. Our variable power scope mounts comes with 30mm tubes. The variable power scope mounts weigh in at just 5.5 oz and are manufactured with the same quality and durability you've come to expect from all Daniel Defense products. Features: Precision machined from 6061 T6 aluminum and finished with Type III hardcoat anodizing for maximum durability Feature our patented rock and lock mounting technology for easy installation and removal with torx plus fasteners at the base and rings Made in the USA