Trijicon GL201-C-600649 Bright & Tough Night Sight Suppressor Set for Glock 17-39 Models - White Front/Rear with Green Lamps - Enhanced Night Vision for Tactical Shooting, Home Defense & Law Enforcement Use

These are very good sights and work perfectly with my Octane 9 and Osprey 45 suppressor.I have owned and used both the Trijicon and the Amerglo suppressor sights, the Amerglo are nice sights but they weren't quite as tall as the Trijicons, so they didn't come up as high as I would have liked for my Octane. The Trijicon are the perfect height and I think are made a little nicer with more attention to detail.Comparing the Trijicon GL201 and GL204I have both the GL201 (the one I'm reviewing now) and the GL204 (the ones for the 10mm and .45.) Either of these can be used on any Glock other than the 42 and 43. The ONLY difference is that the GL204 front sight is .015 shorter than the GL201 front sight, confirmed both by Trijicon's website and talking to their customer service people. The reason for the shorter front sight is to account for the bullet drop of the heavier slower bullet. So basically it will make you shoot higher. The problem with this is Trijicon is bunching the Glocks up into two categories like they do with the rest of their sights and not accounting for the fact that since these are suppressor sights, most people are going to be using heavier slower bullets to stay subsonic. Using the GL201 with my Glock 17, Octane 9 with 147 gn bullets I consistently shot low, replacing the GL201 front sight with the GL204 front sight it shot perfect.The length of slide plays a factor also, without getting too complicated if you are shooting low, the longer the slide (larger sight radius) the shorter your front sight will need to be.If you are shooting standard 9mm and .40 grain ammo co-witnessing with an RMR and not shooting suppressed you should be good to go with the GL201 otherwise the GL204 might be a better option for you.Installing these sights with a sight pusher is very easy and I think recommended over paying your LGS to do it. You can find a sight pusher for about $100 and you will have the luxury of being able to switch out your sights whenever you please and be able to adjust your rear sight for windage in about 5 minutes.I would also recommend using red Loctite on the front screw, I used blue and it still kept coming loose, must have something to do with the mass and weight.This review will also be posted for the GL204.If you have any questions please feel free to ask and if this review was helpful please indicate below.