Barrel PartsAlpha Shooting SportsSold by Brownells

Alpha Shooting Sports

Match Grade Crowned Barrel For Glock 21 - Match Grade Crowned Barrel For Glock 21 45 Acp Tin

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Aggressive Target

Crown for the Glock 21

Titanium Nitride

(TiN) plating for increased wear

Cnc Machined

On state-of-the-art equipment

Compatible 3rd

3rd and 4th Glock 21

Broach Cut

Rifling with 1:16 twist

$175.00
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SKU: 430101519

Overview

Built for Glock 21 owners looking to refine a .45 ACP setup, this barrel is aimed at shooters who want a more precision-focused option for range use and target work. It features an aggressive target crown, TiN plating, and CNC machining, along with a tighter barrel lockup and a fully supported, polished chamber and feed ramp. Compatibility with 3rd and 4th Glock 21 slides makes it a practical upgrade for those maintaining a current platform. The design emphasizes accuracy-oriented details without adding unnecessary complexity.

Why Hunters Choose the Alpha Shooting Sports

Aggressive Target

Crown for a refined muzzle

Titanium Nitride

(TiN) plating adds wear resistance

Compatible 3rd

3rd and 4th Glock 21

Fully Supported

Polished chamber and feed ramp

Cnc Machined

From U.S.-made 416R stainless steel

Key Features

  • Aggressive target crown for the Glock 21 platform.
  • Titanium nitride (TiN) plating for increased wear resistance.
  • CNC machined on state-of-the-art equipment.
  • Compatible with 3rd and 4th Glock 21 slides.
  • Broach cut rifling with 1:16 twist.
  • Fully supported and polished chamber and feed ramp.

Best Used For

  • Glock 21 owners seeking a match-grade replacement barrel for 3rd or 4th generation slides.
  • Shooters wanting a crowned barrel with a fully supported, polished chamber and feed ramp.
  • Users looking for a TiN-plated barrel with a tighter lockup setup.
  • Range and target shooters prioritizing a CNC-machined barrel for a Glock 21 in .45 ACP.

Specifications

Accuracy ClaimImproved accuracy
Blade FinishTitanium nitride (TiN) plated
Caliber45 ACP
ChamberFully supported and polished chamber
Compatible FirearmGlock 21
Compatible Slides3rd & 4th Glock 21 slides
CrownAggressive target crown
Feed RampPolished feed ramp
LockupTighter barrel lock up
Manufacturing MethodCNC machined
Material416R stainless steel bar-stock
RiflingBroach cut rifled
Twist Rate1:16
Wear ResistanceIncreased wear resistance

Pros

  • Aggressive target crown for a refined muzzle profile
  • Titanium nitride (TiN) plating adds wear resistance
  • Compatible with 3rd and 4th Glock 21 slides
  • Fully supported and polished chamber and feed ramp
  • CNC machined from U.S.-made 416R stainless steel bar-stock
  • Broach cut rifling with 1:16 twist

Considerations & Trade-offs

  • Designed specifically for Glock 21 3rd and 4th generation slides, so it is not a universal fit and should be checked against your exact pistol configuration.
  • The aggressive target crown and match-oriented setup may be more specialized than a general-purpose factory barrel, making it a better fit for range or precision-focused use than for those wanting a simple drop-in replacement.
  • The TiN finish is presented as a wear-resistance feature, but the listing does not provide details on maintenance requirements or long-term finish behavior.
  • A tighter barrel lockup and fully supported, polished chamber and feed ramp are performance-oriented features, but the product data does not state any specific compatibility or reliability outcomes with particular loads or setups.

Suggested Comparisons

  • Pistol barrels
  • Glock 21 accessories
  • Match-grade handgun components
  • Target shooting upgrades

Suggested Accessories

  • Cleaning kit
  • Pistol case
  • Gun oil
  • Range bag

Frequently Asked Questions

Which Glock 21 slides is this barrel compatible with?

The source data says it is compatible with 3rd and 4th Glock 21 slides.

What finish does this barrel have?

It is titanium nitride (TiN) plated.

What material is the barrel made from?

The barrel is manufactured from premium U.S. made 416R stainless steel bar-stock.

Does the product description mention any chamber or feed ramp work?

Yes. The source data states it has a fully supported and polished chamber and feed ramp.

Does the listing provide the barrel length or exact dimensions?

No. The provided source data does not list barrel length or other exact dimensions.