Leofoto M-LOK QR Plates - Arca Black. The safety-stops and screws are all stainless steel and the plate is CNC machined from T6061 and hard anodized for durability. A hollowed out design makes the plate relatively lightweight and via the threads and included screws the plate can be secured to the M-LOK handguard of compatible rifles. You can then mount the rifle on Arca-type ball heads and other supports. Specifications for Leofoto GSP-300 M-LOK QR Plates - Arca: Manufacturer: Leofoto Color: Black Fabric/Material: Aluminum Length: 11.8 in Quantity: 1 Accessory Attachment System: Arca Swiss Features of Leofoto GSP-300 M-LOK QR Plates - Arca Aluminum CNC Machining Package Contents: Leofoto GSP-300 M-LOK QR Plates - Arca Leofoto GSP-300: GSP-300 M-LOK QR Plates - Arca Black