A/T Optic Riser 525-5 is approximately 2-1/8" long and is intended to be used with a red dot or other single optic or accessory. This riser has 5 recoil slots (6 lugs). All of BCM risers are the same .525 of rise over the top surface of the upper receiver. Optimized for close combat ranges, the BCM A/T Riser creates a platform that raises the centerline of attached optics and magnifiers by 0.525 inches which raises typical lower 1/3 optics to approximately 2.16 inches height and absolute co-witness optics to approximately 1.93 inches height. This additional height enhances the trained end user's situational awareness, and further, makes it possible for them to take better aimed shots if they are using the optic in conjunction with night vision or other PPE systems.