B5 Systems Ar-15 Mid-Length Handguard M-Lok Fde

The B5 Systems AR-15 Mid-Length Handguard in FDE combines slim ergonomics with practical modularity for shooters building or upgrading their rifle. This drop-in mid-length handguard replaces the standard clamshell design with a two-piece composite construction that's lighter and more configurable than factory setups. Six sides of M-LOK attachment points let you mount lights, grips, rail sections, or sling hardware exactly where you need them—no more compromising on accessory placement.

The M-Lok system has become the standard for modern AR builds, and this B5 handguard delivers straightforward, reliable compatibility. A built-in stamped aluminum heat shield protects your hand from barrel heat during extended shooting sessions, while the integrated handstop gives you a natural reference point for consistent hand placement. The slim 1.75-inch diameter profile doesn't add bulk, making it equally at home on a lightweight hunting rifle or a precision range gun. Whether you run a standard round handguard cap or prefer the triangle style, this handguard works with both.

At 5 ounces and 9 inches long, the mid-length version is a true drop-in—you're swapping out the old handguard without reshaping or fitting. The FDE (Flat Dark Earth) finish blends cleanly with modern tactical furniture and natural-finish receivers. If you're tired of fighting limitations on where you can mount your gear, or you just want a lighter handguard with real ergonomic thought behind it, this B5 mid-length setup is a smart, no-nonsense upgrade.

Key Features

• Drop-in design fits standard AR-15 mid-length gas systems
• Six sides of M-LOK slots for flexible accessory mounting
• Built-in stamped aluminum heat shield for hand protection
• Integrated handstop for consistent grip reference
• Lightweight composite construction
• Works with both round and triangle handguard caps
• FDE finish

Specifications

Frequently Asked Questions

Will this handguard fit my AR-15?

This is a mid-length handguard designed as a drop-in replacement for standard AR-15 mid-length gas systems. It replaces the factory clamshell handguard without additional fitting or modification.

What's the difference between M-LOK and Picatinny rail?

M-LOK uses recessed slots to mount accessories, keeping the handguard profile slimmer and lighter than full Picatinny rail. It's become the modern standard and offers plenty of mounting options for lights, grips, and other gear.

Can I use both round and triangle handguard caps?

Yes. This handguard accepts both round and triangle handguard cap styles, so you can match your existing furniture or swap between them as needed.

Is the heat shield user-replaceable?

The heat shield is built-in as part of the handguard construction and is not user-replaceable. It's designed to protect your hand from barrel heat during shooting.