Glock TSF OR 9mm/.40 S&W FITS: 17/17L, 19/19X, 22, 23, 24, 26, 27, 33, 34, 35, 39, 45, 47 *Optional green front fiber optic included Fiber (TSF) Discover unparalleled brightness with our flagship TAG TSF sights the ultimate sighting system that seamlessly combines reliability, robustness, and serviceability. Whether you're competing in a match or navigating the field, TAG TSF sights stand out as the brightest option in all light conditions. Featuring our patented FiberLok technology, TAG TSF sights redefine user experience. With just a few seconds and the provided hex key no heat required shooters can effortlessly switch out fiber colors, ensuring adaptability to various shooting environments. The result is a dynamic and customizable shooting experience that sets TAG TSF sights apart. Finished with precision in QPQ Nitride and meticulously crafted using CNC technology from billet steel, TAG TSF sights embody durability and accuracy. Experience a crisp sight picture, thanks to the ultra-bright fiber, and revel in premium construction that enhances your overall shooting performance. Optics Ready (OR) TAG Optics Ready line offers all the same great features as our Tactical sights in a taller package designed for use with the most popular dot optics. Description: FITS: 17/17L, 19/19X, 22, 23, 24, 26, 27, 33, 34, 35, 39, 45, 47 Optional green front fiber optic included TAG Optics Ready line offers all the same great features as our Tactical sights in a taller package designed for use with the most popular dot optics Featuring our patented FiberLok technology, TAG TSF sights redefine user experience With just a few seconds and the provided hex key no heat required shooters can effortlessly switch out fiber colors, ensuring adaptability to various shooting environments