Brownells Slide Parts Kit With Billet Firing Pin, Glock 43/43X/48

The Brownells Slide Parts Kit with Billet Firing Pin is a complete solution for anyone building or refreshing a Glock 43, 43X, or 48 slide. Whether you're assembling an aftermarket slide from a parts kit or returning a factory slide to like-new condition, this collection includes every internal component you need—no trips back to the parts bin. Brownells engineered this kit with quality materials and precision tolerances to match factory specifications, so everything fits and functions reliably in a standard Glock slide.

The standout here is the billet firing pin, which replaces the cast alternative with a stronger, more durable component. That matters for longevity and peace of mind, especially if you're putting serious rounds downrange. The extractor is cast from 17-4 stainless steel—a material known for holding up in high-stress applications. The extractor depressor plunger and firing pin safety are machined from bar stock, further emphasizing the kit's commitment to repeatability and durability. Brownells even includes a channel liner installation tool, so you can properly seat the channel liner without guessing or improvising.

This kit is built for shooters who want control over their builds, armorers maintaining a fleet of pistols, or anyone who prefers to source quality parts individually rather than hunt-and-peck across multiple suppliers. Having everything in one box keeps your project moving and eliminates the frustration of a missing spring or plunger halfway through assembly.

Key Features

• Complete slide internals kit for Glock 43, 43X, and 48 pistols
• Billet firing pin for enhanced strength and durability
• Extractor machined from 17-4 stainless steel
• Extractor depressor plunger and firing pin safety machined from bar stock for precision fit
• Includes channel liner installation tool for proper assembly
• Aftermarket parts engineered to factory specifications
• Suitable for new builds or factory slide refurbishment

Specifications

Frequently Asked Questions

Will this kit work on my Glock 43X or 48?

Yes. This kit is designed for the Glock 43, 43X, and 48 platforms and includes all the internal slide components compatible with these models.

What's included in the box?

The kit contains the extractor, extractor depressor plunger and spring, spring-loaded bearing, slide cover plate, billet firing pin, spacer sleeve, firing pin spring, spring cups, firing pin safety, firing pin safety spring, guide rod and recoil spring assembly, and a channel liner installation tool.

Can I use this kit to rebuild a factory Glock slide?

Yes. This kit is designed for both new builds using an aftermarket slide and refurbishment of factory slides to like-new condition. All parts are made to factory specifications for proper fit and function.

Why is the billet firing pin an upgrade?

The billet firing pin is stronger and more durable than cast alternatives, providing improved longevity and reliability under heavy use.