Description
Building out a bare 10mm slide is one of the more satisfying projects you can take on, and the Lone Wolf LWD Completion Kit handles the part that trips a lot of folks up: sourcing every little internal you need in one shot. This kit rounds up the firing pin assembly, safety plunger, extractor, channel liner, spacer sleeve, and cover plate so you're not chasing individual part numbers across five different sites. It's designed for Glock-compatible 10mm slides, and Lone Wolf has been in the Glock parts game since 1998, so they know these platforms inside and out.
What Ships in the LWD 10MM Completion Kit
Inside you get the full set of slide internals: firing pin, firing pin spring and spring cup, firing pin safety with its spring, the spacer sleeve, extractor with depressor plunger and spring, spring-loaded bearing, channel liner, and a black unlined slide cover plate. The parts are CNC machined to tight tolerances, which is why a lot of builders reach for these when finishing a G20, G29, or G40 project slide.
Fitment Notes Before You Build
This is a completion kit, not a full slide, so plan on supplying your own barrel, recoil spring assembly, and sights to finish the job. It's built around Gen 1 through Gen 4 style 10mm slides and does not fit Gen 5 or the G43/43X/48 pistols. As with most aftermarket internals, some parts like the firing pin safety may want a touch of hand fitting depending on your slide, which is normal territory for a build like this.
Why Builders Reach for Lone Wolf
Lone Wolf earned its reputation on solid parts that don't cost a fortune, and this kit fits that mold. Whether you're finishing a fresh 10mm project, refreshing tired internals, or keeping a spares box stocked for range day, it covers the guts of the slide in one tidy package. Grab the barrel and sights of your choice and you've got a running 10mm.
Key Specifications
- Manufacturer: Lone Wolf Distributors
- Manufacturer Part Number: LWD-SLIDEKIT-10
- UPC: 639737068887
- Caliber: 10mm
- Compatibility: Glock-compatible 10mm slides (G20, G20SF, G29, G29SF, G40), Gen 1-4
- Not Compatible: Gen 5, G43, G43X, G48
- Color / Finish: Black
- Product Type: Slide completion / internal parts kit
- Not Included: Barrel, recoil spring assembly, sights
What’s Included
- LWD-84 Firing Pin Safety (9/40/357/10)
- LWD-91 Firing Pin Safety Spring
- LWD-4557 Firing Pin (10/45)
- LWD-63-4 Firing Pin Spring Mid-Weight
- LWD-70M Firing Pin Spring Cup (Marine)
- LWD-3442 Spring Load Bearing LCI (10/45)
- LWD-1909 Extractor LCI 10mm
- LWD-5243 Extractor Depressor Plunger (45/10)
- LWD-119 Extractor Depressor Plunger Spring
- LWD-1148 Channel Liner (all models)
- LWD-56 Spacer Sleeve
- LWD-SCP7-BLACK Unlined Slide Cover Plate (Black)
Frequently Asked Questions
What does the LWD Completion Kit 10MM not include?
The kit covers the internal slide parts but leaves out the three components most builders want to pick themselves: the barrel, the recoil spring assembly, and the sights. That way you can match those to your specific 10mm build and preferences. Everything else needed to bring a bare slide to life is in the box.
Which Glock 10mm models does this completion kit fit?
It's built for Glock-compatible 10mm slides across Gen 1 through Gen 4, covering the G20, G20SF, G29, G29SF, and G40. It does not fit Gen 5 pistols or the G43, G43X, and G48. If you're finishing an aftermarket or Poly 80 style 10mm slide, it works well with standard Glock-pattern internals.
Do the parts drop in or do they need fitting?
Most of the internals seat right up, but on some slides the firing pin safety may want a little hand fitting to get it moving smoothly. That's par for the course with aftermarket completion kits and nothing unusual for a build like this. A basic set of punches and a little patience gets you there.
Is this a good pick for a first-time 10mm slide build?
It is, since it gathers every small internal you'd otherwise have to track down one part number at a time. Lone Wolf has been supplying Glock parts since 1998 and the components are CNC machined to consistent tolerances. Pair it with a good barrel, recoil spring, and sights and you've got a solid foundation for a running 10mm.





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