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Glock

At 3CR Tactical, we offer an extensive selection of premium Glock parts to help you enhance, maintain, and customize your Glock handgun. Whether you’re looking to upgrade performance, improve accuracy, or personalize the look of your firearm, we have the Glock parts to fit your needs.

Glock Slides

Glock slides for Gen 1-3 frames — stripped, shop-assembled, and Build-Your-Own configurations. Inventory covers Glock 17, 19, 22, 23, 26, 43, 43X, and 48 footprints. Pick the cut and finish that matches your build; assembled slides ship ready to drop on your frame.

What to decide before you buy

  • Optic cut — full-size Glock slides (G17, G19, G22, G23, G26) are usually cut for the Trijicon RMR footprint. Subcompact slides for the Glock 43, 43X, and 48 are cut for the Shield RMSc footprint. The two are not interchangeable. Check our RMR vs RMSc vs Holosun K footprint guide before you order an optic.
  • Finish — DLC is the hardest and most corrosion-resistant. Black Nitride is the standard-duty finish at a lower price. Cerakote ships in colors (FDE, OD Green, Graphite Black). See our finish comparison for real-world wear data.
  • Generation fit — most of our slides are cut for Gen 1-3 frames. Gen 4 and Gen 5 frames use a different recoil spring assembly and trigger bar shelf. Confirm generation before ordering.
  • Stripped vs assembled — stripped slides need a barrel, recoil assembly, and a slide completion kit (firing pin, extractor, plunger, cover plate). Shop-assembled Glock slides come built in our Florida shop with the barrel, internals, and cover plate already installed — G17, G19, G22, G23, G26, and G43 footprints available.

 

Glock Slides
Glock Parts Kits

At 3CR Tactical, our Glock parts kits provide everything you need for DIY gun building, whether you’re upgrading an existing Glock or completing a custom build. From a slide and parts kit to a final assembly kit, we offer options for various models, allowing enthusiasts to configure their Glock pistols to specific preferences. With options for full-sized frames, mid-sized frames, and a range of calibers, our kits make it easy to personalize and assemble your own Glock.

Glock Parts Kits
Compensators

Pistol compensators and muzzle brakes for Glock-pattern barrels. Inventory covers 1/2x28 9mm threads (the universal Glock 9mm pitch) and 9/16x24 .40 S&W threads. Pick by caliber, thread pitch, and slide width — a Glock 19 comp will not clear a Glock 43X slide, and vice versa.

How to pick the right comp

  • Caliber and thread pitch — 9mm threaded Glock barrels use 1/2x28. .40 S&W and 10mm use 9/16x24. The thread pitch is stamped on the barrel near the muzzle. A 9mm comp will not thread onto a .40 barrel.
  • Slide width — full-size and compact 9mm comps fit Glock 17, 19, and 26 slides. Subcompact comps for the Glock 43, 43X, and 48 are narrower and will not pair with a Glock 19 slide. Do not cross platforms.
  • Comp vs brake — a compensator vents gas upward to reduce muzzle rise (flatter shooting, faster follow-up shots). A muzzle brake vents sideways to reduce felt recoil. Most pistol "comps" do both to varying degrees. Our compensator explainer covers the physics and what you can realistically expect.
  • Micro vs full-size — micro comps (like the 3CR 9mm Micro Compensator) are 1-inch or shorter and add minimal length to your slide profile. Full-size comps are 2-3 inches and produce more dramatic recoil reduction at the cost of holster compatibility.

Does a micro comp actually work?

Short answer: yes, but expect modest gains on subsonic 9mm. They shine on lighter recoiling rounds when you want flatter splits at speed. We unpack the data in this breakdown. Pair any comp with a threaded Glock barrel in matching caliber.

Compensators
Barrels

Glock Barrels

Upgrade your Glock 17, 19, 23, 26, 43, 43X, or 48 with a drop-in aftermarket barrel — match-grade accuracy, threaded options for compensators and suppressors, and finishes from stealth black nitride to gold TiN. We stock 9mm, .40 S&W, 10mm, and .357 SIG barrels for Gen 1–5 frames, all shipped free with live stock counts.

What to decide before you buy

  • Caliber & model — match the barrel to your Glock's caliber and frame size. A Glock 19 barrel won't fit a Glock 17, and a 9mm barrel won't run .40 S&W. A .40 Glock 22/23 can be converted to 9mm with a conversion barrel — see our Glock 23 9mm conversion guide.
  • Threaded vs. non-threaded — threaded 9mm barrels use a 1/2x28 pitch and pair directly with a compensator, muzzle brake, or suppressor. Not sure you need one? Read is a threaded barrel worth it.
  • Finish — black nitride (QPQ) is the hardest, most corrosion-resistant standard-duty finish; stainless and DLC add durability; TiN gold and other PVD coatings are decorative and will show wear at metal-to-metal contact points over time. Full breakdown in our barrel finish guide.
  • Profile — standard, fluted (lighter, faster cooling), or ported. All are drop-in for the matching Glock model.
  • Generation fit — most barrels are drop-in for Gen 1–5 of the matching model; check the listing for any generation notes.

Build it out

Pair a threaded barrel with a 9mm compensator, or skip the build and grab an assembled slide with the barrel, internals, and sights already installed and function-tested in our Florida shop.

Every barrel ships free, and stock levels shown are live.

Barrels
Pistol Optics

Pistol Optics

Are you looking for an edge when it comes to shooting your handgun? Pistol optics and sights can be a great way to improve accuracy, speed up target acquisition, and extend the range of your weapon.

Pistol Optics
Pistol Sights

Glock Iron Sights & Night Sights

Front and rear sight sets for Glock pistols — steel night sights with tritium, fiber-optic sights, and OEM-style replacement sets from Glock OEM, Truglo, Ameriglo, and more. Upgrade to a faster sight picture for carry and duty, or set up a co-witness with a red dot. Pair with an aftermarket slide or browse Glock pistol optics. Free shipping on every set.

Pistol Sights
Misc Parts

Glock Internal & Replacement Parts

The small parts that keep your Glock running and tune how it feels — guide rods and recoil assemblies, triggers and trigger kits, locking blocks, thread protectors, and more for Glock Gen 1-5 pistols. Upgrade a single component or refresh the whole fire-control group. Building a slide? Pair these with a Glock barrel and an aftermarket slide. Free shipping on every order.

Misc Parts
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