Midwest Industries Combat M-Lok Handguard AR-15 6 Inch Aluminum Black

The TandemKross Eagle Eye Rear Peep Sight is an easy to use upgrade that allows the shooter to intuitively center the front sight in the aperture, resulting in clear and faster front sight focus. Made of CNC machined aluminum for long lasting durability and matte black anodized to absorb light and reduce glare! The TandemKross Eagle Eye Rear Peep Sight drops into a wide variety of Williams Gun Sight Co. fiber optic sights for added flexibility. Note This part will only accommodate Williams Fire Sight with a removable elevation control and U-shaped rear fiber optic. Supported Gun Models (May be others that ship with Williams Sights): KelTec CP33, S&W Victory SW22, Select Ruger MK Series, Ruger Single-Ten. Supported Williams Fire Sight Models: 633505, 602588, 616319, 71013, 71053, 71054, 70957, 70959.