Yankee Hill 9633DX Diamond Series Forearm 9.3 AR-15 Aluminum Black in.

The Yankee Hill Diamond Series 9.3" AR-15 aluminum forearm brings lightweight functionality and distinctive aesthetics to your modern rifle setup. Built from 6061 T6 aluminum and finished with mil-spec hardcoat anodizing, this handguard handles serious use without adding unnecessary weight to your platform. The signature diamond-shaped ventilation pattern isn't just for looks—it channels air around the barrel to help dissipate heat during extended shooting sessions, and keeps your hand cooler when things get hot on the range or in the field.

If you run a lot of optics, lights, or other tactical gear, the four full-length Picatinny rails give you genuine mounting flexibility. The extended top rail sits flush with your receiver rail for a seamless sight picture, and alphanumeric slot markings help you document exactly where you've mounted each accessory. The threaded front end accepts Yankee Hill's screw-in end cap (sold separately) if you want to customize the muzzle end.

Installation is straightforward with the included jam nut, barrel nut, and anti-rotation screws—everything you need to lock the handguard down tight and keep it there. At 9.3 inches, this forearm works well on carbine-length builds and keeps your hand away from the action while maintaining a relatively compact footprint.

Key Features

• Four full-length Picatinny rails for flexible accessory mounting
• Diamond-vented design reduces weight and aids barrel cooling
• 6061 T6 aluminum with mil-spec hardcoat anodize for durability
• Extended top rail for gap-free receiver fitment
• Alphanumeric slot markings for accessory location tracking
• Threaded front end compatible with Yankee Hill end caps
• Includes barrel nut, jam nut, and anti-rotation screws

Specifications

Frequently Asked Questions

Will this handguard fit my AR-15?

The Yankee Hill Diamond Series 9.3" forearm is designed for standard AR-15 platforms. Verify your rifle's compatibility with the included barrel nut and mounting hardware before installation.

What comes in the box?

You get the aluminum forearm, a barrel nut, a jam nut, and anti-rotation screws. The screw-in end cap mentioned in some setups is sold separately.

How does the diamond vent pattern help during shooting?

The lattice venting improves airflow around the barrel, which helps manage heat buildup during extended range sessions or rapid fire. The open design also keeps your hand cooler and reduces the overall weight of your rifle compared to a solid handguard.

Can I mount optics and lights to this handguard?

Yes. Four full-length Picatinny rails provide plenty of space to mount lights, lasers, grips, and other tactical accessories. The alphanumeric slot markings help you keep track of where you've positioned each item.