Rival Arms RA42G003A Slide Completion Kit for Glock 42 380 ACP - Black PVD Stainless SteelRival Arms$119.99
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Rival Arms
Building a reliable Glock 21 starts with quality components, and the Rival Arms Slide Completion Kit for Glock 21 gives you everything needed to finish your slide without hunting down parts from multiple sources. This kit includes all the internal components—striker, extractor, safety, springs, plunger, back cover plate, and slide channel liner—designed to work together as a system. If you're assembling a custom Glock 21 or refreshing an existing build, having these parts spec'd and tested as a unit saves time and eliminates compatibility guesswork.
Rival Arms machines select components from solid stainless steel billet and applies a low-temperature vacuum PVD (Physical Vapor Deposition) coating to the black-finished parts, creating a durable finish that resists wear in regular use. The tighter tolerances throughout the kit translate to smoother cycling and more consistent performance than stock parts. Every component is individually hand-inspected before shipment, so you're not gambling on QC.
This is a slide-internal kit only—you'll still need a barrel, guide rod, and completed lower to finish your build. No gunsmith required; assembly is straightforward for anyone comfortable with Glock armorer-level work. Backed by Rival Arms' limited lifetime warranty.
| Brand | Rival Arms |
| Model | Slide Completion Kit for Glock 21 |
| Finish | Black PVD |
| Material | Stainless steel (select components), coated steel |
| Compatibility | Glock 21 |
| Part Number | RARA42G006A |
| Included Components | Striker, extractor, safety, striker safety spring, back cover plate, extractor depressor plunger, striker spacer sleeve, depressor plunger spring, spring cups, slide channel liner |
The kit includes all internal slide components: striker (firing pin), extractor, safety, multiple springs (striker safety spring, depressor plunger spring), back cover plate, extractor depressor plunger, striker spacer sleeve, spring cups, and slide channel liner. It's designed to be everything you need to assemble the interior of your slide once you have a bare slide.
No. Rival Arms designed this kit for DIY assembly without gunsmith tools or expertise. Standard Glock armorer-level knowledge is sufficient.
This kit finishes the slide internals only. You'll also need a barrel, guide rod, and a completed lower receiver to finish your Glock 21 build.
This kit is designed for Glock 21 compatibility. Verify your specific slide model before ordering, as fitment can vary with some aftermarket slides.
Rival Arms
Building a reliable Glock 21 starts with quality components, and the Rival Arms Slide Completion Kit for Glock 21 gives you everything needed to finish your slide without hunting down parts from multiple sources. This kit includes all the internal components—striker, extractor, safety, springs, plunger, back cover plate, and slide channel liner—designed to work together as a system. If you're assembling a custom Glock 21 or refreshing an existing build, having these parts spec'd and tested as a unit saves time and eliminates compatibility guesswork.
Rival Arms machines select components from solid stainless steel billet and applies a low-temperature vacuum PVD (Physical Vapor Deposition) coating to the black-finished parts, creating a durable finish that resists wear in regular use. The tighter tolerances throughout the kit translate to smoother cycling and more consistent performance than stock parts. Every component is individually hand-inspected before shipment, so you're not gambling on QC.
This is a slide-internal kit only—you'll still need a barrel, guide rod, and completed lower to finish your build. No gunsmith required; assembly is straightforward for anyone comfortable with Glock armorer-level work. Backed by Rival Arms' limited lifetime warranty.
| Brand | Rival Arms |
| Model | Slide Completion Kit for Glock 21 |
| Finish | Black PVD |
| Material | Stainless steel (select components), coated steel |
| Compatibility | Glock 21 |
| Part Number | RARA42G006A |
| Included Components | Striker, extractor, safety, striker safety spring, back cover plate, extractor depressor plunger, striker spacer sleeve, depressor plunger spring, spring cups, slide channel liner |
The kit includes all internal slide components: striker (firing pin), extractor, safety, multiple springs (striker safety spring, depressor plunger spring), back cover plate, extractor depressor plunger, striker spacer sleeve, spring cups, and slide channel liner. It's designed to be everything you need to assemble the interior of your slide once you have a bare slide.
No. Rival Arms designed this kit for DIY assembly without gunsmith tools or expertise. Standard Glock armorer-level knowledge is sufficient.
This kit finishes the slide internals only. You'll also need a barrel, guide rod, and a completed lower receiver to finish your Glock 21 build.
This kit is designed for Glock 21 compatibility. Verify your specific slide model before ordering, as fitment can vary with some aftermarket slides.
