Extended MLOK to ARCA SWISS PlateMade from a solid piece of 6061 aluminum and has a type 3 black hardcoat, comes with high quality mounting hardware. Machined slots that interface perfectly with RRS R Lock and with the detent inlet on Feisol ball head clamps, as well as many others, are on both sides of the plate and cut full length so you can utilize the full 6 inches of plate to help balance your gun on a tripod or gain more clearance for different magazine lengths.