Gen2 ar15 3/4" riser raises your picatinny rail platform by 3/4".Helps with getting low profile optic mounts to a more comfortable cheek rest height and shooting position.Gen2 model has a new updated shape next generation locking quick release mount with shorter lever and is lighter than the previous version.Mounts via a locking quick release mount onto your picatinny rail of your ar15/m4 receiver.You can quickly attach and remove your optic from your receiver and maintain your zero.There is a see through channel below the rail to keep the mount lighter and for some firearm types it may allow you to use some factory iron sights.Length: 5.30"Type: RiserModel: Gen2 AR15 3/4" RiserStyle: Locking Quick ReleaseFinish: BlackMaterial: AluminumPieces: 1Gun Type: RifleMount Type: Picatinny RailRings Included: No