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Glock 21 Recoil Spring – Guide Rod & Recoil System Upgrades

Control Recoil. Improve Performance. Upgrade Your Glock 21 Today.

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🔧 The Best Recoil Spring Upgrade for Your Glock 21

If you shoot a Glock 21, you already know its .45 ACP power delivers serious performance—but that performance comes with recoil. The fastest and most effective upgrade to reduce recoil, improve control, and extend the life of your pistol is a high-quality Glock 21 recoil spring.

Whether you're a competitive shooter, carry daily, or train regularly, our Glock 21 recoil spring and guide rod systems deliver smoother operation, faster follow-up shots, and better protection for your firearm.

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🧰 Compatible Recoil Springs for Glock 21

We stock precision-engineered recoil systems for every generation of the Glock 21:

• ✅ Glock 21 Gen 3 & Gen 3 SF

• ✅ Glock 21 Gen 4

• ✅ Glock 21 Gen 5

• ✅ DPM Captured & Adjustable Recoil Reduction Systems

• ✅ Heavy-duty springs for +P and suppressed builds

Each system includes:

• Stainless steel guide rod

• Multiple recoil springs (for tuning)

• Drop-in compatibility (no tools needed)

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💡 Why Upgrade Your Glock 21 Recoil Spring?

Feature	Factory Spring	DPM Recoil System
Recoil Reduction	❌ Limited	✅ Significant
Adjustable Spring Tension	❌ No	✅ Yes
Slide & Frame Stress Reduction	❌ No	✅ Yes
Suppressor & Comp Compatibility	❌ No	✅ Yes
Competition-Ready	❌ No	✅ Yes
Drop-In Installation	✅ Yes	✅ Yes

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📦 Works with All Glock 21 Configurations

These kits are compatible with:

• RMR and MOS optics-ready slides

• Threaded and compensated barrels

• Suppressed Glock 21 builds

• Extended barrels and ported models

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🔩 How to Install a Glock 21 Recoil Spring

1. Ensure your Glock 21 is unloaded.

2. Remove the slide, barrel, and OEM recoil spring.

3. Insert the DPM guide rod and select a recoil spring tension.

4. Reassemble and function check your pistol.

Total install time: under 5 minutes. No tools required.

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❓ FAQ – Glock 21 Recoil Spring Upgrades

Q: What’s the benefit of upgrading the Glock 21 recoil spring?
A: You’ll experience reduced recoil, smoother cycling, less muzzle rise, and extended internal part life—especially with high-pressure ammo.

Q: Is the DPM system compatible with Gen 4 or Gen 5?
A: Yes. We carry dedicated kits for Gen 3, Gen 4, and Gen 5 Glock 21 models.

Q: Can I use this with +P ammo or a suppressor?
A: Yes. These springs are ideal for full-power loads and include tuning options for suppressed setups.

Q: Will this void my warranty?
A: No. The system is non-permanent and easily reversible.

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🛒 Shop Glock 21 Recoil Spring Kits Now

Mounts Plus carries only the most trusted brands in recoil reduction technology, including DPM Systems. Whether you're looking for a smoother shooting experience or fine-tuning your pistol for carry or competition, we’ve got the right Glock 21 recoil spring for you.

• 🔧 Drop-in installation

• ⚙️ Adjustable tension options

• 🛡️ Built for duty, carry & sport use

• 💳 Fast checkout — fair shipping (no free shipping)

➡️ Select your Glock 21 generation and order today.

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