Strike Industries Link attachment system has a dual interface design that is compatible with both M-Lok and Key-Mod, and has the same hardware with no need for additional parts. The aluminum rail section allows the attachment of various M1913 Picatinny spec rail-mounted accessories such as vertical grips, lights, lasers, etc. The dual interface rail section also has beveled ends to reduce snagging and eliminate sharp corners and edges. This model has six (6) slot sections and a black hardcoat anodized finish.Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-Lok and came up with the ultimate solution, a dual interface design compatible with both M-Lok and Key-Mod, same hardware with no need for additional parts. This Aluminum rail section allows the attachment of various M1913 Picatinny spec rail-mounted accessories such as vertical grips, lights, lasers, etc. The Dual interface rail section also features beveled ends to reduce snagging and eliminate sharp corners and edges. Features: Quickly attached from the outside of the handguard Fits both KeyMod and M-Lok mounting surfaces Easy installation and removal