Daniel Defense M4 RIS II Free Float Tube Handguard Quad Rail AR-15 Rifle Length Aluminum
Installation requires the removal of the factory barrel nut and replacing it with Daniel Defense's proprietary hardened steel barrel nut. This requires the use of the included Daniel Defense Barrel Nut Wrench. Six Grade-8 Mil-Spec Fasteners are then used to secure the handguard tube to the upper receiver via a pair of matching aluminum Bolt-Up Plates.
- Material: 6061-T6 Aluminum
- Length: 12.25"
- Width: 2.23"
- Weight: 17.7 oz
- Inside Diameter: 1.15"
- Gas System Compatibility: Carbine & Mid w/Low Pro Gas Block, Rifle Length
- Free Float: Yes
- Attachment Method: Bolt Up System
Ensure the firearm is unloaded and pointed in a safe direction. Remove the upper receiver from the lower. If there is a flash suppressor and/or front sight base, these need to be removed next. Remove the old handguard. Using a standard barrel nut wrench, remove the existing barrel nut. Place the RIS II barrel nut collar plate over the threaded receiver portion from which the factory barrel nut was removed. Thread on the new Daniel Defense RIS II barrel nut. Tighten the barrel nut down securely, making sure that the gas tube is aligned and inserted into the upper receiver. Next slide on and properly align the handguard with the upper receiver rail, and then bolt it to the barrel nut collar plate with the six included Allen head fastener screws.
The total weight of the product, including the product’s packaging as it sits on our shelf. Since some products ship directly from the Manufacturer, their weight may be unavailable. Because of variations in the manufacturing process, similar products may have differing weights. Unless the product is designated as “Ships Alone”, Shipping Weight does not include the shipping box or packing materials associated with your order.
Product ships from MidwayUSA, separate from any other products on your order due to its size. Products that are Shipped Alone incur separate "Per Order" and "Per Pound" shipping charges.
Product is regulated by the US Department of Transportation (DOT) and cannot be shipped via USPS or air shipping methods. DOT-Regulated products must ship UPS Ground.
Product is restricted by shipping carriers and cannot be shipped to certain locations or via certain shipping methods.
Additional shipping charge for HazMat products. Carriers charge extra to ship packages with products they consider hazardous, such as reloading powder and primers.
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