Description
Building a custom G21 or PF45 slide? You need this slide parts kit.
Ready to build a custom GLOCK® slide for your Gen 3 pistol or Polymer80 build? You need to pair it with a parts kit like this one. We’ve got your PF45 build (or factory GLOCK® 21) covered with a quality, OEM-style slide parts kit.
NOTE: this GLOCK® compatible upper parts kit does NOT include sights or a barrel. These are personal choices, so we left it up to you.
What’s Included:
- Firing pin
- Firing pin spring
- Firing pin spring cup
- Firing pin safety
- Firing pin safety spring
- 9mm Extractor
- Extractor depressor plunger
- Extractor depressor plunger spring
- Channel liner
- Spacer Sleeve
- Steel cover plate
- Polymer guide rod (guide rod, washer, screw)
- Guide rod spring
Need help with installation? Follow our guide on how to assemble your slide!
DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 80 Percent Lowers, a/k/a 80-lower.com nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or “assault weapons” (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
- Platform:
- GLOCK® Compatible
- Caliber:
- .45
- Size:
- Full
- Model:
- G21
- Platform:
- GLOCK® Compatible
- Caliber:
- .45
- Size:
- Full
- Model:
- G21
Frequently Asked Questions
- How fast is shipping?
- Orders ship within 3 business days to your selected Michigan FFL dealer with full tracking info.
- Where can I pick up my firearm?
- Pickups are at licensed FFL dealers in Michigan. Use terms like “gun shop near me in Michigan” or “FFL dealer in Michigan” to locate one.
- Do I need a permit or license?
- For handguns, residents must obtain a License to Purchase (unless they already hold a CPL). Long guns from FFL dealers require no additional permits—per Michigan law.
- Can I carry this concealed or openly?
- Michigan is a “shall-issue” state for concealed carry at age 21+. Open carry is allowed without a permit, except in vehicles or specified locations :contentReference[oaicite:20]{index=20}.
- Is this Glock® 21 Compatible Upper Parts Kit right for me?
- Our Glock® 21 Compatible Upper Parts Kit is ideal if you’re shopping for: Glock® 21 Compatible Upper Parts Kit, Handgun Parts. Great options for both beginners and experienced owners.
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Frequently Asked Questions
- How fast will my order ship?
- We ship all orders within 1-3 business days to your licensed Michigan FFL dealer. Tracking info will be emailed.
- What is your return policy?
- Non-firearm items can be returned within 14 days unused. Firearms sales are final after FFL transfer. See full return policy.
- Is the Glock® 21 Compatible Upper Parts Kit suitable for me?
- Our Glock® 21 Compatible Upper Parts Kit is popular among Michigan customers for personal defense and sport shooting.