100% Risk Free, Lifetime Warranty Includes: Sling Mount, M-LOK Base, Nuts, and Bolts. Materials: 6061 Aircraft Grade Aluminum Compatibility: M-LOK Rails. Weight: 0.9 oz Length: 2.0 in Height: 1.14 in Color: Black Warranty: Lifetime The Monstrum Tactical Sling Mount with M-LOK Adaptor Base is a modular sling attachment point that installs to your M-LOK equipped rifle. The M-LOK adaptor base is compatible with the universal M-LOK mounting system and includes all necessary mounting hardware. The sling head can be attached and removed instantly from the base via the push button detach mechanism. The swiveling head provides free rotation of sling while remaining securely fastened to base.