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Glock® 21 Compatible Barrel | Polymer80

SKUG21-763-BLK
$79.99
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About this product

Glock® 21 Compatible Barrel: OEM Performance at a Great Price

Experience reliable cycling and excellent accuracy with this Polymer80 Glock® 21 compatible barrel. Designed to meet factory specifications, this barrel ensures seamless performance with any .45 ACP load, making it a top choice for enthusiasts and professionals alike.

Key Features and Technical Specifications

  • Caliber: .45 ACP
  • Barrel Length: 4.5 inches
  • Twist Rate: 1:16
  • Material: High-strength 4150 Gun Steel
  • Finish: Durable Black Diamond-Like Carbon (DLC) coating for enhanced wear resistance and corrosion protection

Compatibility Information

This barrel is engineered to fit all generations of Glock® 21 pistols, including Gen 1 through Gen 4 models. Whether you’re building a custom Polymer80 frame or upgrading an existing firearm, this barrel delivers unmatched compatibility and performance.

Installation and Support

For easy installation, refer to our detailed guide on how to assemble your slide. Our commitment to quality and customer support ensures you have the resources needed for a successful build.

Glock 21 compatible barrel with DLC finish for Polymer80 builds

Trust in Polymer80’s expertise for all your firearm components. This barrel not only enhances accuracy but also provides long-lasting durability, backed by our reputation in the industry.

Specs at a glance

Glock® 21 Compatible Barrel… SPECS AT A GLANCE 4.5 inches SIZE
Editorial diagram — measurements verified during testing.

What's in the box

  • Glock® 21 Compatible Barrel | Polymer80
Sources & methodology. Editorial review and rating by Caleb J. Reisinger based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$79.99