This 1.5" adapter attaches to the bottom of any compatible M-LOK™ rifle chassis like the Ruger Precision® Rifle and supports mounting to RRS-style tripod heads. Installs in seconds with included hardware. Constructed of rugged 6061 T-6 aluminum. This adapter is covered by XLR's Lifetime Warranty. Weighs 5 oz. made in the USA by XLR Industries.