Details: This rail ties the upper receiver to the forearm to create a very rigid shooting platform. This rail will also give you the SPR look. Uninterrupted upper rail platform for multiple accessory arrangements. T6061 CNC Aluminum construction Features: Provides a rigid shooting platform Functions as a rail riser for scopes or red dot sights Gives your rifle a unique SPR look Uninterrupted upper rail platform T6061 Aluminum CNC Package include: PRI PEQ Top Rail Mounting hardware