Sylvan Arms QD M-LOK Rail Combo 7-Slot/3-Slot Black The Sylvan Arms RC100 Rail Combo includes two quick-detach Picatinny rail mounts for M-LOK: one seven-slot Picatinny section and one three-slot Picatinny section. Both are made from 6061-T6 aluminum with a black anodized finish. The two section sizes give the package its defined contents. M-LOK identifies the host mounting format, while Picatinny identifies the accessory rail presented by each section. Quick detach describes the rail-section connection format. This is a two-piece rail-mount combination, with the seven-slot and three-slot components supplied together. Key Features Two rail sections: One seven-slot and one three-slot mount. M-LOK host fit: The mounting interface. QD format: Quick-detach rail-section configuration. 6061-T6 aluminum: The construction material. Black anodizing: The finish. Specifications Brand: Sylvan Arms Model: RC100 Product: QD rail combo Included: 1 seven-slot and 1 three-slot Picatinny mount Host interface: M-LOK Material: 6061-T6 aluminum Finish: Black anodized Shop the Sylvan Arms QD M-LOK Rail Combo Black at BattleHawk Armory.