MPN: GL-0009P-3N / GL-0009P-3Y / GL-0009S-5N / GL-0009S-5P / GL-0009S-5Y


  • Excels in high-stress defensive situations
  • High-contrast color designed for maximum visibility in all light conditions
  • Glow Dot -convex photoluminescent dot absorbs ambient light and glows in low light levels
  • Low profile and snag-free design for comfortable carry and fits in most common holsters
  • Big Dot remains visible under stress when the focus is drawn downrange. Outside diameter 0.188"
  • Dot-the-"i" Sight Picture - Straight line sight picture with differentiated front and rear sight prevents shooters from confusing the front and rear sight
  • Rear Sight Ledge aids in one-handed slide manipulations
  • DXW2 - Tritium front sight with white line rear sight (GL-0009P-3N, GL-0009P-3Y)
    • Low-profile V provides greater visibility of objects downrange of the front sight
  • DXT2 - Tritium in both front and rear sight (GL-0009S-5N, GL-0009S-5P, GL-0009S-5Y)
    • Beta Emitting lamps glow in low light to aid in sight alignment
  • Made in the U.S.A.

XS Glock 17/19 Night Sights


  • Material: Steel


  • Glock 17, 19, 22, 23, 24, 26, 27, 31, 32, 33, 34, 35, 36, 38, 45 (Gen 1-5)


  • DXW2 - Tritium front sight with white line rear sight
    • 1x Tritium Front Sight
    • 1x Front Slight Screw (Installed)
    • 1x Rear Sight
    • 1x Glock Front Sight Tool
    • 1x Red Thread Locker
  • DXT2 - Tritium in both front and rear sight
    • 1x Tritium Front Sight
    • 1x Front Slight Screw (Installed)
    • 1x Tritium Rear Sight
    • 2x Rear Sight Screws (Installed)
    • 1x Allen Key
    • 1x Glock Front Sight Tool
    • 1x Red Thread Locker


White Line XS Big Dot Sight



Are you looking for a night sight which is suitable for use with your Glock? XS Sight Systems has produced a sight that will help you acquire your target even in low light.

This Glock tritium sight is designed to make it simple to achieve target acquisition even in low light environment. Tritium is an isotope of hydrogen and is radioactive. The radioactivity of tritium causes it to produce a continuous glow when combined with a phosphor.

This Defensive Express XS Big Dot Glock Night Sight features a V-shaped rear blade with a dot front sight. The tritium insert for the front sight is surrounded by a large high-contrast glow outline. This high-contrast outline helps the Glock user to more speedily acquire the target while under stress. The outline also makes this Glock tritium sight easier to use during the day light hours if needed or desired.

The Glock pistol is recognized as one of the most reliable handguns on the market. Why not make yours even more useful with the purchase of this Glock night sight? Someday, you may be glad you did.

About XS Sight System:

XS Sight Systems was begun in 1996 by Ashley Emerson. The company’s success was in part to the heavy focus on customer needs, hard work and the cultivation of lasting relationships. The company is currently operated by Jon Patusek, who continues to run the company with the same passion for excellence. XS Sight Systems is committed to equipping the “good guy” to handle not-so-good situations and proudly supports military personnel and law enforcement officers.



This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.

“GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Wing Tactical, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit

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