I alluded to this in a previous article, but a Glock is not “perfection.” Once you’ve acquired one, you’ll want to make at least one change, and maybe more than one. The thing you must change is the sights. This isn’t a “nice to have,” it is definitely a “need to have.” The plastic/rubber sights that come as stock fodder tend to either fall off or get chewed up from anything more than delicate usage. They are also not particularly usable for one handed malfunction clearance or reloads, which is a concern for combat pistol usage. Any steel sights are good, but some are better than others. I have had the best luck with Dawson Precision and Trijicon sights. Those tend to be more durable than some other options I’ve tested.
Should you add anything else besides sights? The answer, as in most things, is “maybe.” The gun is pretty good right out of the box, and you can leave largely unmolested. On the opposite side of the coin, you can certainly add so many modifications and changes that you can really start to hurt the original design’s reliability. I will share with you the items that I put on my most recent Glock 19, and why.
On the subject of sights, I put suppressor height Night Fision sights on my Glock 19, along with a Trijicon RMR 06. If I weren’t going to use an optic I would’ve probably used Trijicon HD-X sights, but there are several good options out there.
Regarding the trigger, I did change out the connector to the Glock “minus” version. It slightly reduces trigger effort without changing the reliability or defeating any of the internal safeties. That is probably as far as I am willing to go on a carry/combat pistol in terms of changing the trigger. While I have experimented with aftermarket triggers and trigger bars, I didn’t find them to change my accuracy or speed. That said, I do know that Overwatch Precision triggers don’t defeat any internal safeties, so if I were going to put in a different trigger, it’d likely be that one. Apex has a solid reputation and so I would certainly consider one of theirs as well.
Finally, I put a Tau Development Striker Control Device (SCD) on this Glock. For anything I carry AIWB, I like to have that additional safety feature. It is a completely passive safety that allows me to ensure that nothing gets in the way of the trigger during reholstering. There is a lot of information out there about this product, but suffice it to say that I am a believer. The only time I’ve seen the SCD cause any issue was in conjunction with suppressor use. For any other application, I am a firm believer in the SCD.
There are things that I won’t do on a carry gun that I would do on a competition gun. Things like lighter springs, polish jobs, etc. I worry that those could conceivably affect the reliability of the gun in less than ideal conditions which may arise during real world use, and so I don’t bother with them on my day-to-day guns. Right now you can get so many Glock compatible parts that you could conceivably build a Glock with absolutely no actual factory Glock parts. You can buy aftermarket frames, slides, barrels, and the list goes on. In some instances those parts have some interesting uses, but in some, I feel that the parts predominantly exist to separate people from their money. As a buyer you need to beware, and if you’re going to carry that gun to defend yourself or your loved ones, you should take even greater care. It would be a really bad day if you’re trying to defend yourself from a violent criminal and you hear a click instead of bang.