Sylvan Arms QD 7-Slot Picatinny-to-M-LOK Rail Mount Black The Sylvan Arms QDR300 is a seven-slot Picatinny-to-M-LOK rail adapter with a quick-detach format. It is made from 6061-T6 aluminum and finished in black anodizing. The two separate interface names describe different sides of the rail adapter: it fits the M-LOK mounting surface and presents a Picatinny rail section for compatible accessories. Seven slots identifies the rail section size. The QD feature allows the rail section to be attached or detached without tools, distinguishing the connection format of this model. Key Features Seven-slot rail: The Picatinny rail-section size. M-LOK host interface: The mounting format to match. Quick-detach design: Tool-free rail-section connection format. 6061-T6 aluminum: The material. Black anodizing: The finish. Specifications Brand: Sylvan Arms Model: QDR300 Product: QD rail adapter Host interface: M-LOK Accessory interface: 7-slot Picatinny Material: 6061-T6 aluminum Finish: Black anodized Shop the Sylvan Arms QD 7-Slot M-LOK Rail Mount at BattleHawk Armory.