Specifications Build: Polymer Composite Length: 1.9 In. Height: 0.375 In. Width: 0.750 In. Weight: 0.3 Oz. Compatibility: This Magpul M-Lok Rvg Adapter Rail Is Compatible With All M-Lok Enabled Airsoft Rifles. Package Includes: Adapter Rail, Mounting Hardware, Instructions Color: Matte BlackFeatures Designed Specifically For Mounting The Magpul Rvg Rail Vertical Grip Durable Composite Construction Seamless Mounting To M-Lok Hand Guards All Mounting Hardware Included Made In The Usa