Brownells Complete Window Slide Assembly W/Ported Barrel For Glock 17

The Brownells Complete Window Slide Assembly with Ported Barrel for Glock 17 is a fully assembled upper receiver designed to upgrade your factory G17 Gen3 or serve as the foundation for a custom pistol build. This slide ships complete with barrel, sights, and small parts installed—no gunsmithing required. The standout feature is the top window and ported barrel design: eight angled ports vent gases to counteract muzzle rise, keeping your sights tracking faster between shots. Unlike a traditional muzzle brake or compensator, the ported design lets your finished gun fit standard Glock 17 holsters.

Built from 416 stainless steel billet and finished in Black Nitride, the slide is machined to Glock factory specs and accepts Gen3 Glock 17 frames and compatible aftermarket receivers. The ported barrel is match-quality 416R stainless steel. Up front and rear, you'll find wide, shallow cocking serrations and mirrored front serrations for confident slide manipulation from any grip angle or shooting position. The slide includes a pre-cut RMR mounting slot for modern reflex optics with the Trijicon RMR footprint, plus a reinforced polymer cover plate if you're not running a dot yet.

Standard-height front and rear iron sights come installed and can serve as your primary sights or as backup iron when paired with a red dot. This is an ideal drop-in upgrade for shooters wanting better recoil management and optics-ready capability without permanent alterations to a factory frame. A channel liner (sold separately) is required for installation.

Key Features

• Fully assembled with match-quality ported barrel, front/rear sights, and small parts installed
• Ported barrel with eight angled ports reduces muzzle rise for faster follow-up accuracy
• Window-top design allows ported barrel while maintaining standard holster compatibility
• 416 stainless steel billet construction with Black Nitride finish for durability and corrosion resistance
• Pre-cut Trijicon RMR red dot mounting slot with included polymer optic cover plate
• Front and rear cocking serrations for positive slide manipulation from any angle
• Fits Glock 17 Gen3 factory frames and compatible aftermarket receivers

Specifications

Frequently Asked Questions

Does this slide fit my Glock 17?

Yes, the Brownells window slide is compatible with Glock 17 Gen3 factory frames and frames from other manufacturers that are dimensionally compatible with Gen3 Glock 17 specs. A channel liner (sold separately) is required for installation.

Can I use this with my factory Glock holster?

Yes. The ported barrel is housed within the slide's window rather than extending forward like a traditional compensator, so the finished pistol maintains a profile that fits standard Glock 17 holsters.

What comes installed on this slide?

The slide ships completely assembled with the ported barrel, front and rear sights, recoil spring assembly, and all internal small parts ready to install on your frame. It also includes a reinforced polymer cover plate for the RMR optics slot.

Can I mount a red dot sight on this slide?

Yes. The slide features a pre-cut mounting slot compatible with reflex sights using the Trijicon RMR footprint. Standard-height iron sights are installed and can serve as primary sights or backup irons when used with an optic.