Glock pistols are also very customizable
The Glock 19 is the most popular 9mm pistol on the market. It is compact size and high ammo capacity make it a favorite for law enforcement and civilians alike. Glock pistols are also very customizable, and they can be modified to suit practically any application.

This article will review Glocks third generation model 19, which was introduced in 1988 as an improved polymer framed version of its predecessors.
Here’s a picture showing all three generations side-by-side: As you can see, there have been some slight cosmetic changes over time, but the overall functionality has remained the same. I’ll be focusing on all-things 3rd Gen here, but make sure to check out my other articles about 1st and 2nd generation Glocks as well:
I’ve owned a Glock 19 for about 5 years now, and it has been incredibly reliable and durable. It is accurate and easy to shoot, which makes it a good choice for beginners and seasoned shooters alike.
It was after recently making some upgrades that I became aware of how many popular upgrades there are available for the Glock 19. This article will cover all of the most common upgrade options so you can pick your modifications wisely, should you choose to add them to your own Glock pistol!
Different Sights:
Your choice of sights will depend on your preferences and how you plan to use the gun. I’ll be covering many of these options in my article: Choosing Your Glock Handgun .
Here’s a picture showing some of the most common sight types:
As far as rear sight upgrade options go , most people stick with either metal or polymer sights. Metal sights, such as Ameriglo Defoor Pros, provide quick target acquisition but they don’t hold up as well over time. Polymer sights (Ameriglo Agent or GLOCK Tru-Dot) are more durable and less likely to break; however, metal rear sights tend to be easier to see, especially at longer distances.
Here are some common front sight options:
Tritium-filled fiber optic sights will provide the quickest target acquisition in low light conditions. However, they can also become cloudy or fall out over time if you shoot often enough. Dot variants (Ameriglo Hackathorn or GLOCK Night Sights) are polymer sights that offer quick target acquisition in daylight conditions without the need to replace batteries. If you live in a sunny climate, this might be your option of choice as dot sights always appear bright and visible to the user. White-dot/black-outline sights (GLOCK Marksman) have three white dots on a black background that allow for easy target acquisition during the day and night, as long as there is sufficient light.
Here’s a picture showing all three variants:
Pistol lights can also be of benefit to those who don’t carry a flashlight as they allow you to identify your target easily during nighttime conditions. This could aid in getting a second shot off more quickly without the need to acquire your target with iron sights first. Lights will also have an effect on accuracy, so this might not be best for those who are accustomed to shooting with standard rear sight styles as it can take some time to get used to seeing both the front and rear sights at once. Some common light options include:
A “Surefire” brand light/laser combo – These have been around for decades and serve multiple purposes by being able to use both a light and laser at the same time. The Surefire X300 is by far the most popular model in this category . Streamlight TLR-1 – This is a gun mounted light featuring an adjustable beam pattern with windage and elevation adjustments. It’s also waterproof to 66 feet which makes it perfect for use in all weather conditions. If you’d like, you can choose from several different colors of lens covers . LaserMax Guide Rod Laser Sight – This features a red visible laser that attaches underneath your gun’s barrel where it can’t be seen when not in use.