The Leofoto GSA-180 Arca-Picatinny Rail is an Arca-type to Picatinny compatible rail and allows for the attachment of various picatinny rail-mounted accessories such as flashlights, bipods, vertical grips, etc. The rail is CNC machined from aircraft-grade 6061-T6 aluminum and hard anodized for optimal strength and durability. GSA-180: 180mm x 38mm x 15mm