This is the second of these Lasermax guide rod sighs for Glock that I have purchased. The first was for a .40 cal Glock 27 and this for a 9mm Glock 26.
As before the primary advantage of this sight is that it is completely internal (replacing the existing guide rod)and does not change the exterior of the pistol. As such, it should always remain in absolute proper alignment. Since this was my second installation it took about 3 minutes.
These sights appear to be pretty much on target at 21 feet.
This laser is a flashing light (not steady on) and does just fine in target acquisition (as all lasers should).
The single drawback is that the takedown lever is replaced with a somewhat larger lever that acts as both takedown and the laser on/off. I have found that this new lever falls directly under my thumb in a two handed grip and can be accidently activated/deactivated, particularly during discharge.
Still pretty expensive, even with price match, but dos the job.
Pros: Completely self contained
Cons: No windage or elevation adjustments
This review was written in the old system and had content requirements that are different than reviews written today.