The NcStar Quad Rail Handguard (brand part number MAR4S) is a 6.7-inch carbine-length rail system built to replace a standard AR-15 handguard in minutes with no gunsmithing or modification required. NcStar constructs the handguard from hard anodized aluminum to resist corrosion and hold up to years of use, and the removable Weaver-style rail sections let you customize which surfaces carry a forward grip, flashlight, laser, or other rail-mounted accessory. It’s a straightforward, budget-friendly way to add four-sided accessory space to a carbine-length AR-15 build.

Key Specifications

• Carbine-Length Sizing is built specifically for carbine-length gas systems.
• Removable Weaver-Style Rails let you customize which sides carry accessories.
• Hard Anodized Aluminum Construction resists corrosion for long-term durability.
• Black Finish matches most factory and aftermarket AR-15 builds.
• 6.7-Inch Overall Length covers the standard carbine-length handguard area.
• No-Gunsmithing Installation replaces a factory handguard in minutes.

Frequently Asked Questions

Does this fit a rifle-length gas system? No, this handguard is sized specifically for carbine-length AR-15 builds.

Can I remove rail sections I’m not using? Yes, the Weaver-style rails are removable so you can customize the handguard to your build.

Does installation require gunsmithing? No, it installs in minutes with no modification required.

Buy the NcStar Quad Rail Handguard, Carbine Length, AR-15, Black

Add four-sided accessory space to your carbine with an NcStar Quad Rail Handguard from our rifle parts selection. Order online and we’ll ship it straight to your door from our Lubbock, Texas gun shop.