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Guide Rod Assembly for Glock 21 Gen 4 – Compatibility Guide
Why upgrading your guide rod assembly matters for the Glock 21 Gen 4
The Glock 21 Gen 4 is known for its power, reliability, and versatility in duty, competition, and concealed carry. It’s a dependable workhorse.
Upgrading your guide rod assembly improves performance and reliability. NDZ’s precision-machined version offers enhanced stability and reduced recoil over OEM. Feel the difference in every shot.
| Part SKU | Part Name | Firearm Model | Compatible |
|---|---|---|---|
| NDZ-G20-G4-SST-KIT-4P | NDZ Guide Rod Pin Ext Slide Lock Ghost Bullet Kit | Glock 21 Gen 4 | Yes — Verified |
Get Yours from NDZ Performance
Precision-machined in the USA. Ships fast.
View NDZ-G20-G4-SST-KIT-4P on NDZ Performance