Listening to Law Enforcement, Military Personnel and Hunters, ATI has designed an AR-15 Forend that allows for maximum ease of use. - Military Type III Anodized, 6061 T6 Aluminum 8-Sided Rifle Length Free Float Forend - Insert Rails at 45 Angles Around the Circumference of the Forend for Ultimate Versatility, and more Natural Placement of Accessories. - 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 - Millions of Rail Configurations - Two 12 and Six 4 Military Type III Anodized, 6061 T6 Aluminum Picatinny Rails - 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 - Fits Most AR-15 variants.