Magpul MAG583: M-LOK Alum. Rail Section - 9 Slots
MAG582: M-LOK Alum Rail Sect 7 Slots
The Magpul M-LOK Aluminum Rail Section is designed to be used with all M-LOK compatible forends and handguards wherever you might need to add an M1913 Picatinny rail section! Machined from Mil-Spec anodized aluminum, the M-LOK rail sections have beveled ends to reduce snagging and eliminate sharp corners and edges.