# Glock slide build parts checklist

To finish a stripped Glock slide you need a barrel and recoil spring assembly for your model, an upper parts kit for the internals (firing pin assembly, firing pin safety, extractor and plunger parts), a back plate, and sights or an optic with screws. Match every part to your slide's model and generation.

By The Button Land Customs shop, Machinists and gunsmiths · Button Land Customs, Sedalia, NC · Last updated 2026-11-02
Source: https://buttonlandcustoms.com/guides/glock-slide-build-checklist

## What does a stripped slide come with?

Nothing inside. A stripped slide is the machined slide on its own, so you add every internal part, the barrel and the recoil spring before it will run. Our custom slides ship stripped, so this is the list for finishing one of ours too.

## The checklist

| Part | What it does | Where to find it |
|---|---|---|
| Barrel | Matched to your slide's model (a Glock 19 barrel for a Glock 19 slide) | [Barrels](https://buttonlandcustoms.com/shop/barrels) |
| Recoil spring assembly | Returns the slide to battery; get the one for your model and generation | Your Glock dealer or the barrel maker |
| Firing pin (striker) assembly | Firing pin, spring, spacer sleeve and spring cups | [Upper parts kits](https://buttonlandcustoms.com/shop/parts-kits) |
| Firing pin safety and spring | Blocks the firing pin until the trigger is pulled | In an upper parts kit |
| Extractor, plunger, spring and bearing | Pulls the spent case out of the chamber | In an upper parts kit |
| Back plate (slide cover plate) | Holds the firing pin assembly in the slide | [Back plates](https://buttonlandcustoms.com/shop/back-plates) |
| Sights | Front and rear, or suppressor-height to co-witness a dot | [Sights](https://buttonlandcustoms.com/shop/sights) |
| Optic and screws | For a slide with an optic cut | [Optics](https://buttonlandcustoms.com/shop/optics), [Optic Cut Screw Pack](https://buttonlandcustoms.com/product/optic-cut-screw-pack) |

Our upper parts kits: [Glock 19 Upper Parts Kit](https://buttonlandcustoms.com/product/g19-upper-parts-kit) ($65, also fits polymer 80 builds).

## How do you pick the barrel?

Match the barrel to the slide's model: Glock 19 to Glock 19. Choose threaded if you'll run a compensator or suppressor, where that's legal for you. Every [barrel](https://buttonlandcustoms.com/shop/barrels) we list names the model it fits.

## Is there a quicker way?

Yes. Slide pages offer a build kit (slide, upper parts kit and barrel) you can add to your cart at once. Want us to put it together? [Full pistol customization](https://buttonlandcustoms.com/custom-work/full-pistol-customization) covers a complete job on your Glock.

## Before you shoot it

Assemble it following the parts makers' instructions and function check it. If you're not sure it's right, have a gunsmith check it, or call us at (720) 549-3265.

## Questions

### What parts do I need to finish a stripped Glock slide?

A barrel and a recoil spring assembly for your model, plus the slide's internal parts: the firing pin assembly with its spring, spacer sleeve and spring cups, the firing pin safety and spring, the extractor and its plunger parts, a back plate, and sights or an optic. An upper parts kit covers the internals.

### Does a Glock 19 upper parts kit fit a Polymer 80 build?

Our Glock 19 Upper Parts Kit is listed for the Glock 19 and also fits Polymer 80 builds, at $65. The upper kit goes in the slide, so what matters is that your slide is a Glock 19 pattern. Your frame needs its own lower parts kit.

### Which barrel do I need for a Glock 19 slide?

A Glock 19 barrel. The barrel has to match the slide's model, and threaded barrels stick out past the slide for a compensator or suppressor. We carry 16 Glock 19 barrels; every listing names the model it fits. Pair it with the recoil spring assembly made for your slide's model and generation.

### Do your slides come with the internal parts installed?

No. Our custom slides ship stripped: the machined slide on its own, with no barrel, recoil spring or internal parts. Our slide pages offer a build kit with an upper parts kit and a barrel for that model, so you can order everything to finish the slide at once. Questions about a specific slide? Call (720) 549-3265 or email sales@buttonlandcustoms.com.

## About the author

Written by the team that designs, CNC machines and Cerakotes our slides and does gunsmithing work in our Sedalia, NC shop, formerly GunCuts.com. Facts like prices, lead times and fitment come from our own catalog.