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17 Inch M-LOK Handguard – Precision Rail for DMR & Suppressed Builds

Looking to upgrade your AR-15 with a high-performance, extended rail? A 17 inch M-LOK handguard is ideal for those building designated marksman rifles (DMRs), suppressed setups, or precision AR platforms. With added space for optics, bipods, lights, and grips, this length gives you full flexibility without compromising stability.

Whether you’re chasing long-range accuracy or building a sleek, streamlined rifle, we’ve got you covered with lightweight, durable 17" handguards from brands shooters trust.

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🔧 Why Choose a 17 Inch M-LOK Rail?

Maximize Attachment Space

The extended rail gives you more room to mount gear exactly where you need it. From night vision to forward grips or bipods, it supports serious configurations for tactical or precision shooting.

Ideal for Suppressor Clearance

A 17" rail can fully or partially shroud your suppressor, offering a cleaner look while keeping hands and cables clear of hot zones.

Lightweight & Rigid

Made from aerospace-grade aluminum or even carbon fiber, these handguards combine low weight with superior structural strength. That’s a big advantage for long shooting sessions or competition builds.

M-LOK Versatility

M-LOK slots at 3, 6, and 9 o’clock (and sometimes on the diagonals) let you attach what you need — nothing more, nothing less. Customize your setup without excess bulk or weight.

Free-Float Accuracy

All our 17” M-LOK rails are free-floating — meaning they won’t interfere with barrel harmonics, giving you tighter groups downrange.

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🏆 Our Best-Selling 17 Inch M-LOK Handguards

• JL Billet Angled AR-15 M-LOK Handguard – Lightweight and uniquely contoured

• UM Tactical 3-Gun M-LOK Rail – Fast and competition-ready

• Coda Evolution Carbon Fiber Handguard – Ultralight with aggressive styling

Each model includes installation hardware and supports standard barrel nut compatibility.

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🔍 Perfect For These Builds

• AR-15 DMR builds – Combine with low-profile gas blocks and long barrels

• Suppressed rifle setups – Covers suppressors while improving balance

• Competition shooters – Shave ounces without sacrificing functionality

• Long-range optics users – Keep your support hand steady out front

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🛠️ Why Buy From Mounts Plus?

We only stock what we’d use ourselves — no junk, no compromises. Fast shipping, responsive support, and a deep catalog of compatible parts help you get the most from your next upgrade. Not sure which 17 inch M-LOK handguard is right? Just ask — we’ll help you choose.

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💬 FAQ

Q: Will a 17 inch M-LOK handguard fit my AR-15?
A: Yes, if your rifle uses a rifle-length gas system or a low-profile gas block. Make sure the barrel extends far enough to accommodate the full rail without interfering with your muzzle device.

Q: Are these handguards free-floating?
A: Yes, all of the 17” handguards we carry are free-float designs — ideal for improved accuracy and less barrel contact.

Q: Can I mount Picatinny accessories to this handguard?
A: Absolutely. With M-LOK-to-Picatinny adapter sections, you can attach legacy accessories like lights, irons, and vertical grips.

Q: Do I need special tools to install it?
A: Most models come with barrel nuts and wrenches. A standard armorer’s wrench, torque wrench, and basic AR tools are usually all you need.

Q: What length barrel works best with a 17” rail?
A: A 16" or longer barrel is ideal. If you’re running a suppressor, ensure the rail and device do not interfere with function or heat dissipation.

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