First introduced in 2012, XS Sight Systems has extended the Xpress Threat Interdiction (XTI) product line to include Big Dot Tritium Express and 24/7 Tritium Angle Mount Back-Up Iron Sight upgrades for your AR-15/M-16. Designed for firearms equipped with handguard mounted top picatinny rail systems, this low-profile night sight option is an excellent addition for Tac-optics class 3-gun shooters, home defense and patrol rifles with magnified optics.

Packaged for right-handed shooters, these sights are ambidextrous as left-handed shooters simply flip the rear sight and base for easy do-it-yourself installation. Sight kit comes complete with blue locking thread compound to apply to rear sight once windage is determined; elevation is adjustable by pressing the detent and rotating the front sight.

XS upgrades available in Big Dot and Standard Dot Express sets that feature a Tritium Front with White Stripe Rear; priced msrp $150. XS® 24/7 Big Dot and Standard Dot® Express sets feature a Tritium Front with Tritium Rear; msrp $180. On display at NRA 2014 in XS® Booth# 6449 and available through XS Supporting Exhibitors Brownells and Natchez Shooters Supply.

Logo courtesy XS Sight Systems

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