XS SIGHT SYSTEMS, INC.

AR-15/M-16 XS Upgrade: Big Dot Xpress Threat Interdiction Sights

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.    

 

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