Description
OEM performance and price.
Sometimes, it’s best to stick with factory-spec components — like this DLC-coated, G21-compatible barrel — to guarantee reliable cycling and good accuracy with any .45 ACP load.
Barrel Compatibility
This barrel fits all Gen 1 to Gen 4 GLOCK® 21 pistols.
Barrel Features
- Size: .45 ACP
- Barrel Length: 4.5″
- Twist Rate: 1:16
- Material: 4150 Gun Steel
- Finish: Black Diamond-Like Carbon (DLC)
Installing Your Barrel
Need help with installing your barrel? Here’s How to Assemble Your Slide (Instructions).
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.
- Model:
- G21
- Size:
- Full
- Barrel Finish:
- Nitride
- Model:
- G21
- Size:
- Full
- Barrel Finish:
- Nitride
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 Barrel right for me?
- Our Glock® 21 Compatible Barrel is ideal if you’re shopping for: Glock® 21 Compatible Barrel, 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 Barrel suitable for me?
- Our Glock® 21 Compatible Barrel is popular among Michigan customers for personal defense and sport shooting.