Building a carry-ready Glock 43 with a modern red-dot sight doesn't require sending your factory slide out for machine work. The Brownells Premium Slide for Glock 43 with Holosun 407K cut gives you a stripped, optic-ready upper that arrives pre-machined to accept the Holosun 407K or 507K footprint—letting you assemble exactly the pistol you want without compromise. This is the foundation for shooters who demand better than factory and won't settle for generic donor slides.

Built from heat-treated stainless steel and finished in tough black nitride, this slide combines durability with a clean, professional look. The angled front and rear serrations bite without shredding your hands, and the stripped format means you choose every other component: your barrel, sights, internals, and recoil system. Whether you're upgrading a duty carry gun, building a dedicated range pistol, or just want the optic-mounting flexibility a modern Glock deserves, you're not locked into someone else's vision.

The 407K cut is purpose-built for Holosun's compact red-dot platform, delivering the sight height and durability pairing that matters for concealed carry work. Black nitride resists corrosion and scratching through regular handling and training, and the satin finish won't snag or reflect at bad moments. This is a no-frills, purpose-driven component for builders who know their way around a Glock platform.

Key Features

• Stripped slide ready for custom assembly—you pick every upper component
• Pre-machined for Holosun 407K and 507K red-dot sights, no gunsmith required
• Heat-treated stainless steel with black nitride finish for corrosion and wear resistance
• Angled front and rear serrations for positive manipulation and control
• Compatible with Glock 43 Gen 1-3 frames

Specifications

Frequently Asked Questions

Will this slide work with my Glock 43?

Yes, this Brownells Premium Slide is compatible with Glock 43 Gen 1-3 frames. It's a dropped-in replacement for the factory slide on any of those generations.

What red-dot sights fit the optic cut?

The slide is machined for Holosun 407K and 507K footprint sights. These are compact red dots designed for concealed-carry pistols and will mount securely without additional modification.

Do I need a gunsmith to install this slide?

No. This is a stripped slide designed to drop onto a Glock 43 frame. Once you install your barrel, recoil spring assembly, and other internal parts, the optic can be mounted directly to the factory cuts—no machining needed.

What comes with this slide?

This is a stripped slide only. You will need to source and install a barrel, recoil spring assembly, firing pin, firing pin spring, extractor, and other internal components separately to complete the upper assembly.