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17 Inch Handguard for AR-15 – M-LOK, Free-Float, Lightweight Options

Maximize your rifle's accuracy, balance, and accessory space with a 17 Inch Handguard—the ultimate rail system for long-barrel AR-15 builds. At Mounts Plus, we carry a curated selection of precision-engineered 17” handguards, featuring M-LOK compatibility, free-float construction, and ultra-lightweight designs from the top brands in the industry.

Whether you’re shooting suppressed, building a DMR platform, or outfitting a competition rig, our 17” handguards provide unmatched performance and aesthetics.

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✅ Why Choose a 17 Inch Handguard?

A 17-inch handguard gives you maximum rail coverage for your AR-15. Designed to pair perfectly with 18” and 20” barrels, these handguards provide:

• 🧲 More room for accessories – Mount optics, bipods, lights, and more

• 🔩 Free-float precision – Reduces barrel contact for improved accuracy

• 🔥 Superior heat dissipation – Extended length and venting improve cooling

• ⚙️ M-LOK modularity – Attach gear at 3, 6, 9 o’clock and Picatinny top rails

• 💪 Built to last – Aircraft-grade aluminum or carbon fiber options

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📊 Top 17 Inch Handguards We Recommend

All models come with barrel nuts and mounting hardware.

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Best Use Cases for 17" AR Handguards

These long handguards are ideal for:

• 🔘 Precision AR-15 builds (DMR or SPR setups)

• 🔘 Suppressor use – covers and protects part of the suppressor

• 🔘 3-Gun competition rifles

• 🔘 18" or 20" barrel platforms

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🛠️ Compatibility & Installation

All 17” handguards listed:

• Fit standard mil-spec AR-15 upper receivers

• Are compatible with low-profile gas blocks

• Require simple tools and include mounting hardware

• Offer M-LOK slots along the sides and bottom

• Include a full-length Picatinny rail on top (most models)

For carbon fiber models, check compatibility with suppressor overhangs.

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❓ Frequently Asked Questions (FAQs)

Will a 17 inch handguard fit a 20” barrel?

Yes. A 17” handguard pairs well with 18” and 20” barrels, leaving enough space for muzzle devices and accessories.

Is a 17” handguard too long for home defense?

While possible, 17" rails are best for long-range and competition setups. Consider shorter rails for CQB/home defense builds.

Is carbon fiber worth the price over aluminum?

If weight is a concern, carbon fiber offers exceptional strength and heat resistance at nearly half the weight.

Can I install this myself?

Yes. Most kits include barrel nuts and mounting hardware. Basic tools like a torque wrench and vise block make installation easy.

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🛒 Shop 17 Inch AR Handguards at Mounts Plus

Mounts Plus is your go-to source for 17 inch AR-15 handguards, offering:
✅ Lightweight, modular rails
✅ Suppressor clearance on select models
✅ Trusted brands: JL Billet, UM Tactical, Coda Evolution
✅ Fast shipping from our U.S. warehouse
✅ Friendly customer support & installation tips

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