The KAC Upper Receiver Extending (URX) 4 rail is a fully modular free floating, hybrid replacement forend for your AR-15 rifle. The rail features a continuous upper picatinny rail and is compatible with MLOK accessory attachment. This handguard is more stable with it's unique one-piece construction and integral barrel nut making it one of the most light weight configurable systems currently available. Knights handguards are made from high quality aluminum and feature a long lasting tough, and durable anodized black finish. When you need professional grade parts, equipment or gear and second best just isn't good enough, turn to Knight Armament.

Features and Specifications:
Manufacturer Number: 32304-1450
URX 4 Forend Assembly
Free Floating Design
14.5" Overall Length
Full Length Picatinny Top Rail
M LOK Accessory Attachment
Requires Lo-Profile Gas Block
Integral Barrel Nut
Aluminum
Hardcoat Anodized
Overall Weight 13.8 ounces
Inside Diameter 1.55"
Outside Diameter 1.68"
Matte Black

Includes:
Installation Wrench
Shim Kit
Instructions