Military Type III Anodized, 6061 T6 Aluminum 8-Sided Carbine Length Free Float Forend. Insert Rails at 45? Angles Around the Circumference of the Forend for Ultimate Versatility. Mounting Long Distance Optics on the Top Rail and a Short Distance Sight onto the 45? Rail makes Switching Between Long and Short Range Targeting as Quick as a Twist of the Wrist. Slide Rails into any Position on the Forend for Nearly Unlimited Customization. Put Accessories Exactly where You want them. Military Type III Anodized, 6061 T6 Aluminum Picatinny Rails. 6 Low Profile Picatinny Rail. 4 Picatinny Rail. 2 Picatinny Rail. Slotted Barrel Nut Constructed of Military Type III Anodized, 6061 T6 Aluminum. Three Set Screws Lock the Forend into Place on the Slotted Barrel Nut. Provides a Secure Fit, that cannot Rotate. Eliminates the need for the Jam Nut. Allows Forend to be Installed Flush to the Receiver. Virtually Indestructible. Manufactured in the USA. Limited Lifetime Warranty. Patent Pending.