Sylvan Arms QDR100: This incredible Sylvan Arms Quick Detach Rail section allows for ease of attaching and detaching rail sections without the use of tools and within a matter of seconds. This model is designed to fit only M-Lok rails and features a three-slot section of Picatinny for accessory mounting. This rail is fantastic for increasing the modularity of whatever platform you are using. A 2-year warranty from Sylvan Arms backs this product.