The Arisaka Offset Picatinny Adapter is designed to mount on our Offset Scout Mount and Side Scout Mount for M-Lok and KeyMod. This allows the user to attach Picatinny based lights like the Surefire X300 or Inforce WML, or other Picatinny rail mounted accessories on M-Lok, KeyMod and CMR handguards. The Offset Picatinny Adapter also requires one of the following to form a complete mounting solution: Offset Scout Mount M-Lok Offset Scout Mount MCX (M-Lok) Offset Scout Mount KeyMod Offset Scout Mount CMR Side Scout Mount M-Lok Side Scout Mount KeyMod Side Scout Mount CMR Specs Length: 1.76" Weight: 0.5 oz The mo Mfg: Arisaka Defense