TRUGLO TFO Tritium & Fiber-Optic Handgun Sight | Snag-Resistant Front & Rear Bright Night Sights, Compatible with Glock Handguns

Very Happy with this purchase! First off let me point out that the earlier reviews of these sights complain of the front screw being to long or otherwise for the gen 4 Glocks. Mine came with the proper screws for both the Gen3 and Gen4 use. The front sight fits slightly loose in the slide slot just as it should so you can make adjustments for proper alignment. I set mine straight with a small straight edge/ruler laying up against it and down the length of the slide BEFORE I put the rear sight on and it was very easy to line it up properly. The stock front sight screw was set further forward in the slide making use of a socket on the screw to remove it impossible because there was zero room between the front edges of the screw/bolt and the front of the slide. However, since the stock front sight is made of plastic the bolt is not really all that tight and I used a small set of needle nosed pliers to get mine loose with little trouble. The Truglo front sight has it's mounting bolt set back further towards the rear of the slide slot making use of a socket to tighten the bolt with my standard Craftsman 3/16" socket doable. Coat the cleaned bottom of the front sight with Loctite making sure you do not get any in the bolt hole and set the sight onto the slide. The bolt only needs the very smallest little dab of Loctite on the tip of the screw before inserting it. To much and it will never come out without breaking it. Snug the bolt slightly then align the sight then finish tightening the bolt. DO NOT over tighten! The Loctite on the sight will do a fine job of holding everything in place, the screw just needs to keep everything in place while the Loctite cures and moderate screw tension will keep the sight in place for years.My Factory rear sight was pretty easy to remove with a brass punch/hammer and the slide mounted in a bench vise. USE SOFT JAWS or wood or several layers of hard cardboard taped to the vise jaws in your vise if the jaws are serrated or you will get marks on the sides of you slide while tapping the new rear sight in. Check for fit. If the rear sight goes in almost half way with moderate tapping with a punch you should be able to install the rear sight. If it stops way before getting near halfway in STOP and remove the sight for fitting. Using a small triangle file gently take a few swipes on the sight dovetail on each side and recheck the fit. Repeat until the sight fit is proper. On final installation of the rear sight put a small drop of Loctite it the dovetail on the slide. Using a punch carefully tap the sight into place centering it as best as you can. I used a depth micrometer to center mine but you could also use a dial or digital caliper to check from each side of the slide and get the sight centered as best as you can. The set screw only needs the smallest amount of Loctite on it to hold it and for Heavens sake DO NOT over tighten it! The included Allen wrench with my kit was a slightly sloppy fit in the set screw. This could make the wrench and or set screw easy to damage if you over tighten it making it impossible to get apart later if needed. Remember, the fit in the dovetail is what is supposed to keep the sight in place, not necessarily the tension on the set screw. It is best to let the gun sit for several before hours shooting to let the Loctite cure properly.In the end, I am very happy with this set of sights on my Glock 26! After centering the rear sight on my slide it needed no further adjustments for my shooting. As a side note I left my slide on my bedroom night stand the day I installed the sights so the Loctite could cure someplace warm instead of my cold garage. I was pleasantly surprised to see the Tritium vials glowing in the dark when I turned in to bed that night! Not super bright (which is really not good) but plenty bright enough for night time social use! Thanks for taking the time to read through my lengthy post and I hope this helps someone with their decision to purchase or the installation of these sights! Enjoy...

TRUGLO TFO Tritium & Fiber-Optic Handgun SightsI wanted to be able to see the sights on my EDC pistol at any level of illumination and these sights work well. With a lot of light hitting the fiber optic rods the sights get brighter, and in the dark the tritium illuminates the sight dots.The original GX4 sights were basically only useful in the daylight and not other times, front dot was too tiny and the rear sights had no dots.These Truglo sights give you just enough visual reference to aim accurately in bright light, low light and even no light scenarios (see the dark photo).They were pretty easy to install onto my pistol.The front sight, with a green sight dot, required me to push it down into place with a plastic screwdriver handle and it fit tightly.The front sight bolt appeared to already had some threadlocker compound on it. The bolt hole is properly placed allowing a front sight tool to easily install and tighten the bolt. You have to be careful to thread it into the sight correctly.The base of the rear sight, with yellow sight dots, required some very light filing to custom fit (photo) to my slide and my sight pusher installed them semi-easily. There is a set screw to use with the included allen key, that helps the rear sight stay in alignment. I did not use threadlocker on it yet until I have a few more sessions at the range in case I need to readjust its position.The package includes front sight, rear sight, information, and an allen key.Now these sights are just bright enough for my purposes, but you may require something brighter or even an external gun light/flashlight. I like small handheld flashlights.I award this product FIVE stars and hopefully it will last the 12 years of usefulness.

Got this sight system to replace some aged tritium sights on my Gen 4 (non MOS) Glock. Like the fact that they have both tritium and fiber optics. Installation was straight forward. Very impressed with both the daytime and nighttime visibility from these sights. Definitely an upgrade from the old night sights previously installed.