The AmeriGlo 3XL Optic Compatible Sight Set for Glock MOS (AmeriGlo part no. GL-193) is a matched front-and-rear tritium set built to co-witness with slide-mounted red dot optics on Glock MOS pistols. Both the front and rear blades carry green tritium vials in the tall 3XL height, elevating the sight plane so you get a precise, repeatable reference through your optic’s window instead of a partial or blocked view. The front blade adds a black outline for daylight contrast, while the rear uses AmeriGlo’s i-Dot tritium style in a square notch for a fast, familiar sight picture. Fitting Glock Gen 1 through Gen 5 MOS slides, this set works as a reliable back-up sighting system if the red dot ever fails or runs out of battery.

Key Specifications

• Sized in the tall 3XL height specifically to co-witness with slide-mounted red dot optics.
• Front blade uses green tritium with a black outline for daylight visibility.
• Front blade measures 0.125 inch wide and 0.365 inch tall for a precise sight picture.
• Rear sight uses AmeriGlo’s i-Dot tritium style with a square notch in matching green.
• Rear notch is cut 0.15 inch wide, with an overall rear height of 0.451 inch.
• Fits Glock Gen 1 through Gen 5 MOS slides for broad compatibility.

Frequently Asked Questions

Will this co-witness with my red dot? Yes, the 3XL height is designed specifically to give an elevated co-witness sight picture through slide-mounted red dot optics on MOS-cut Glocks.

Can I buy just the front or rear individually? Yes, AmeriGlo offers these sights individually in addition to the matched set.

Buy the AmeriGlo 3XL Optic Compatible Sight Set for Glock MOS

A dedicated co-witness set turns a slide-mounted red dot into a genuinely reliable defensive setup, and this AmeriGlo 3XL pairing gets your irons lined up correctly the first time. Order it from AmeriGlo through our gun sights lineup and we will ship it fast from our Lubbock, Texas gun shop.