The Knights Vision UNS-SR (Short Range) clip-on sight’s light weight and short length make it the optimal accessory for mid-sized AR-platform rifles with limited rail space and a front sight. The UNS-SR is ideal for use with dedicated short-range optics such as the Trijicon ACOG series and most 8X or less tactical day scopes and is short enough to fit in-between the ACOG and a dedicated front sight, attached to a Picatinny rail. These units are manufactured with Gen III Elbit or L3 green phosphor, Min 1600 FOM image tubes and include a full one-year warranty. MSRP: $6,000. Contact: www.nvdevices.com