Mounts onto two keymod slots. Durable keymod that can add a sling swivel to your handguards. Light weight by design that won't effect the weight of the airsoft gun. Constructed out of aluminum alloy for extra durability. Capable to be used for mounting bipods that use sling studs. Keymod can help stabilize accuracy for your bipod. In the Box 1X Keymod Adapter Specifications: California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov