It is important to make sure your custom build comes from a trusted manufacturer such as Zaffiri Precision.

You can contact our customer support at any point during your build process. We do recommend that you consult a professional gunsmith to assemble the parts.

Building a firearm from scratch gives you full control over the look and feel.

A firearm build is a collection of parts that allow you to customize your own firearm. This is different to a complete firearm, where everything is already assembled.

Yes. The frames for both models are interchangeable.

To remove the slide from a Sig P365 XL, first ensure that the magazine is removed and the chamber is empty. Then, pull the slide back, push the takedown lever forward, and carefully remove the slide.

You do not need any specialized tools or expertise. Zaffiri Precision also offers professional installation services for upper parts, including a new slide.

A custom slide can not only improve the look of your firearm but the performance as well.

Upgrading your Glock trigger is important if you’re looking to boost your firearm’s performance.

As long as our trigger upgrade is compatible with your model or generation, upgrading is an easy process.

Yes. Our Glock trigger upgrades are compatible with ALL models and generations.

A new trigger can have many positive effects on your shooting performance, including better accuracy and reduced pull weights.

We can ship our trigger upgrades nationwide. However, it is important to double-check your local, state, or municipal regulations to ensure that the trigger upgrade is legal.

Apart from the potential to add more rounds to your firearm, a new magwell streamlines the base of the grip, which reduces the chances of fumbling to enhance shooting performance and overall firearm handling.

No. However, if you are uncomfortable with using hardware and tools such as a screwdriver or torque wrench, we offer professional installatio

Because magwells reduce the chance of fumbling, you could experience improved handling of your firearm, which could lead to better accuracy.

Yes. Our selection of optics and sights can be used with aftermarket parts, such as slides, so long as the thread pitches match.

No. It is important to first confirm whether the optic or sight you are purchasing is compatible with your current or desired firearm.

You do not necessarily need specialized tools, but if you are uncomfortable using tools such as a torque wrench, screwdriver, or other hardware, it may be best to have it professionally installed.

For Gens 1-4, no. However, since the Gen 5 Glock 17 and 19 have the same locking block, you could.

Zaffiri Precision’s high-quality Glock barrels are made of durable materials such as 17-4 stainless steel.

If properly maintained and cared for, a Glock barrel can last anywhere from 10,000-50,000 rounds or higher. Barrel life span will also vary by what ammo is being used. This is a “wear and tear” item and will need to eventually be replaced when the rifling wears down. We warranty all manufacturers’ defects for one year after purchase.

The standard Glock 19 barrel is 4.02 inches in length.

No. Most Glock barrels will not be interchangeable due to several factors including frame length, locking blocks, etc.

It depends on the state in which you live. Barrel type will likely be the most impactful as many states impose laws on Threaded Barrels and their attachments.

Installation of your Glock upper parts kit can be done at home or by us! We offer professional installation services.

Like all parts of your firearm, it is important to establish a consistent maintenance schedule for your upper parts to ensure they remain clean and reliable.

Installation of your Glock upper parts kit can be done at home or by us! We offer professional installation services.

The standard Glock upper parts kit includes a firing pin spring, firing pin spacing sleeve, spring cups, firing pin safety nitride, firing pin safety spring, extractor depressor plunger nitride and spring, spring-loaded bearing, firing pin channel liner, extractor, and slide covering plate.

In most cases, no. This is because Glock upper parts kits are designed for specific models.

Like all parts of your firearm, it is important to establish a consistent maintenance schedule for your upper parts to ensure they remain clean and reliable.

Improper installation of your Glock upper parts kit can cause damage to your firearm and negatively affect its reliability.

Your complete Glock upper can be installed at home or by professionals. Zaffiri Precision offers part installation services for Gen 5 uppers and more.

Yes. Zaffiri Precision’s Gen 5 Glock uppers are compatible with your existing Gen 5 lower receiver.

To ensure your parts stay in reliable condition, it is important to establish a consistent cleaning and maintenance schedule.

Due to every state having their own laws and regulations, it will vary. We do not ship assembled uppers to New York and Washington state.  California does not have the Glock Gen 5 handguns on their roster currently.  Please make sure to know your local, state, and federal laws.

No. Glock 17 and 19 uppers are not interchangeable because the two have different lengths and lockups.

Zaffiri Precision’s compensators counteract muzzle rise by venting gases that leave the barrel upwards. This can help shooters reduce recoil and improve shooting accuracy.

All of our high-quality parts, including compensators, are made at our facility in Largo, FL.

While compensators are legal nationwide, threaded barrels are banned in some states. It’s important to double-check your state’s laws before purchasing either part.

For those with a threaded barrel, compensators are very easy to install.

If your compensator is wider or taller than the slide, it will not fit on a standard firearm holster.

The typical Glock 17 complete upper comes with a barrel, a slide, an upper parts kit, and sights.

Yes! You can purchase individual parts for your Glock 17 upper in our shop.

Although Glock 17’s complete uppers are designed for the G17 models, they can be interchanged with the Glock 22 and 31 models with possible modifications.

Our custom slides allow you to choose the desired optic cut to fit your needs.

Your Glock 17 slide will come stripped, no channel liners are included. We will also supply the optic screws for all slides, including custom ones.

The Glock 19’s specific design limits its ability to be paired with other slides. For the Glock 19 Gen 3, you’ll want to use a Glock 19 Gen 3 slide, as Gen 4 slides will not fit.

To install a new Glock 19 Gen 3 slide, you’ll want to first ensure it is unloaded, remove the magazine, and then field strip the firearm. You’ll then want to remove the existing barrel and recoil spring to be attached to the new G19 slide before installing it and then testing the firearm.

While the two are largely similar in appearance, the Glock 19 Gen 3 slide uses a single recoil spring instead of the Gen 4’s double. Many of the significant changes between Gen 3 and Gen 4 are in the frame, such as the texture, removable backstraps, and enlarged magazine release.

If your Glock 19 Gen 4 slide is found to have a manufacturing defect, we will provide a full replacement or refund.

With a wide variety of slide cuts and optic cuts for your slide, we offer a ported barrel option with ported slide options as well.

Yes. At Zaffiri Precision, we offer custom Glock 19 slides for Gen 3, 4, and 5. We also offer custom cerakote and optic cuts for all models.

It can vary. At Zaffiri Precision, we use high-quality materials such as 17-4 stainless steel on all of our slides.

Make sure your Glock 19 is unloaded and then safely field-strip the firearm. Then, remove the recoil spring, barrel, firing pin, and extractor assemblies before cleaning and inspecting all parts.

The Glock 45 uses a slide that is essentially the same as the Glock 19 Gen 5 slide.

With a wide variety of slide cuts and optic cuts for your slide, we offer a ported barrel option with ported slide options as well.

To change your G34 slide release, ensure the firearm is unloaded and the magazine is removed. Then, disassemble the pistol into its main components, locate the slide release, and use a tool to press out the trigger pin. Finally, carefully remove the G34 slide release and position a new one in its place.

The opening on top of a Glock 34 slide, sometimes referred to as a “slide cutout” is used to reduce weight, reduce muzzle rise, and dissipate heat during prolonged shooting sessions.

To install a new Glock 34 slide, you’ll want to first ensure it is unloaded, remove the magazine, and then field strip the firearm. To field strip, press the eject button found below the trigger guard, release the magazine, and then set it aside from the weapon. Next, you’ll want to safely pull the slide back, point the gun at the floor, and pull the trigger to release the hammer.

You’ll then want to remove the existing upper and move the barrel and recoil spring to the new slide.

Yes. Zaffiri Precision offers Glock 17L slide and barrel combos as part of our high-quality complete upper sets.

Upgrading to a Glock 17L slide offers a number of advantages when paired with the Glock 17L’s frame. These include enhanced sight radius and reduced muzzle rise. You can also mount an optic directly to your slide. The 17L comes with a Trijicon RMR optic footprint.

Complete Glock uppers can help you improve your firearm’s overall feel, look, and shooting consistency as all parts are designed to work with OEM models.

The typical Glock upper comes with a barrel, slide, upper parts kit, and sights. We also offer assembly of the upper parts kit at an additional cost.

To start, safely disassemble your existing firearm, ensuring that it is also unloaded and the magazine is removed. Then, carefully reinstall your new parts and test the firearm to ensure proper functionality.

A complete Glock upper from Zaffiri Precision includes a slide, barrel, upper parts kit, and sights. Complete uppers allow you to easily customize your Glock firearm’s look by selecting all of your parts in one place.

The Glock 48 slides are specifically designed to fit Glock 48 or 43X frames. The 48 slides are compatible with the 43X frame. The 43x and 48 share the same slimline frame.

For a Glock 48 (G48) slide, you should use a Glock 48 frame. The G48 slide is designed specifically for its slimline frame. However, you can use a G43X frame as both are part of Glock’s Slimline series.

Simply head to Zaffiri Precision’s shop to explore high-quality, custom aftermarket parts for your Glock 48.

The Glock 34 slide is approximately 8.15 inches (207 mm) in length. However, it’s always a good idea to refer to official specifications or measure it directly if precision is essential for a specific application.

To change your G34 slide release, ensure the firearm is unloaded and the magazine is removed. Then, disassemble the pistol into its main components, locate the slide release, and use a tool to press out the trigger pin. Finally, carefully remove the G34 slide release and position a new one in its place.

Sometimes referred to as a “slide cutout,” the opening on top of a Glock 34 slide is used to reduce weight and muzzle rise.

To install a new Glock 34 slide, you’ll want to first ensure it is unloaded, remove the magazine, and then field strip the firearm. To field strip, press the eject button found below the trigger guard, release the magazine, and then set it aside from the weapon. Next, you’ll want to safely pull the slide back, point the gun at the floor, and pull the trigger to release the hammer.

You’ll then want to remove the existing upper and move the barrel and recoil spring to the new slide.

Zaffiri Precision offers a range of high-quality aftermarket Glock 34 slides for Gen 3 and 4. We also offer custom Glock 34 slide and barrel combos and Glock 34 complete slides.

At Zaffiri Precision, our goal is to provide you with exceptional customer service as you select your aftermarket replacements. Many of our parts can be shipped directly to your door, minimizing your wait time. Returns are accepted for merchandise that is found defective immediately upon receipt.

The Glock 19’s evolution from Gen 3 to Gen 5 showcases Glock’s commitment to improving ergonomics, performance, and user customization. Gen 3 introduced finger grooves and an accessory rail, while Gen 4 added a dual-recoil spring, a modular backstrap system, and a larger reversible mag release. Gen 5 then removed the finger grooves, brought in a marksman barrel for enhanced accuracy, and features an ambidextrous slide stop.

To replace your existing Glock 19 slide with a custom aftermarket part, first, ensure that the gun is unloaded. Then, remove the magazine, pull the trigger in a safe direction, pull the slide back slightly, and finally depress the slide lock on both sides. Slide the original slide off, place the new slide on, and ensure it clicks securely into place. As always, follow safety guidelines and consult the manual if unsure.

At Zaffiri Precision, our goal is to provide you with exceptional customer service as you select your aftermarket replacements. Many of our parts can be shipped directly to your door, minimizing your wait time. Returns are accepted for merchandise that is found defective immediately upon receipt.

You can see Glock’s emphasis on user customization and performance of its Glock 26 firearms through its Gen 3 and 4 models. Gen 3 introduced finger grooves and an accessory rail, while Gen 4 added a dual-recoil spring, a modular backstrap system, and a larger reversible mag release.

To replace your existing Glock 26 slide with a custom aftermarket part, first, ensure that the gun is unloaded. Then, remove the magazine, pull the trigger in a safe direction, pull the slide back slightly, and finally depress the slide lock on both sides. Slide the original slide off, place the new slide on, and ensure it clicks securely into place. As always, follow safety guidelines and consult the manual if unsure.

At Zaffiri Precision, our goal is to provide you with exceptional customer service as you select your aftermarket replacements. Many of our parts can be shipped directly to your door, minimizing your wait time. Returns are accepted for merchandise that is found defective immediately upon receipt.

The Glock 17’s evolution from Gen 3 to Gen 5 showcases Glock’s commitment to improving ergonomics, performance, and user customization. Gen 3 introduced finger grooves and an accessory rail, while Gen 4 added a dual-recoil spring, a modular backstrap system, and a larger reversible mag release. Gen 5 then removed the finger grooves, brought in a marksman barrel for enhanced accuracy, and features an ambidextrous slide stop.

To replace your existing Glock 17 slide with a custom aftermarket part, first, ensure that the gun is unloaded. Then, remove the magazine, pull the trigger in a safe direction, pull the slide back slightly, and finally depress the slide lock on both sides. Slide the original slide off, place the new slide on, and ensure it clicks securely into place. As always, follow safety guidelines and consult the manual if unsure.

At Zaffiri Precision, our goal is to provide you with exceptional customer service as you select your aftermarket replacements. Many of our parts can be shipped directly to your door, minimizing your wait time. Returns are accepted for merchandise that is found defective immediately upon receipt.

To replace your existing Glock barrel with an aftermarket part, start by first making sure the firearm is unloaded. Then, safely field strip your Glock to remove both the existing slide and barrel. Once your new aftermarket barrel is inserted, reassemble your firearm and perform a function test to make sure everything is working properly.

Aftermarket barrels for your Glock 19 firearm include ported, threaded, and flush, each with its own distinct design. Choosing the right type of barrel often depends on the intended purpose of the firearm. For example, flush barrels are even with the end of a firearm’s slide or frame, making them a great choice for concealed carry. Ported barrels, however, have holes or slots cut into the top of the barrel and sometimes through the slide to allow gases to escape vertically, reducing recoil and muzzle rise.

At Zaffiri Precision, our goal is to provide you with exceptional customer service as you select your aftermarket parts. Many of our parts can be shipped directly to your door, minimizing your wait time. Returns are accepted for merchandise that is found defective immediately upon receipt.

To replace your existing Glock barrel with an aftermarket part, start by first making sure the firearm is unloaded. Then, safely field strip your Glock to remove both the existing slide and barrel. Once your new aftermarket barrel is inserted, reassemble your firearm and perform a function test to make sure everything is working properly.

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Aftermarket barrels for your Glock 43/43X firearm include ported, threaded, and flush, each with its own distinct design. Choosing the right type of barrel often depends on the intended purpose of the firearm. For example, flush barrels are even with the end of a firearm’s slide or frame, making them a great choice for concealed carry. Ported barrels, however, have holes or slots cut into the top of the barrel and sometimes through the slide to allow gases to escape vertically, reducing recoil and muzzle rise.