The ADE PRO handguard was designed by Ade Advanced Optics right here in Oregon with the goal of being the lightest and smallest free floating forend for ar15. The width of the handguard before accessories have been installed is only 1.49".Proudly Made in USA! Ade Advanced Optics introduced this new rail in ShotShow 2017, this is the first batch we received. 17" Length, TRUE TYPE III Hard Coat Anodized AluminumUltra Light and Robust Design1913 Top Rail withCut Out.M-LOK System. Steel Barrel NutT7075 Aluminum. (While most of the rails on the market are made of T6061/T6063 aluminum, Ade Advanced Optics decided to use superior grade T7075 aluminum for all ADE PRO handguards for their new flagship U.S. made handguard)Includes:HandguardSteel Barrel Nut with Nitride FinishMounting ScrewsShimsJust like other U.S. Made name brand handguards, ADE PRO is using ENGLISH screws, not METRIC screws that are only popular overseas.Handguard Weight: 8.4 oz.Nitride Steel Barrel Nut Weight: 3.1 ozFree USPS shipping from Portland Oregon,We ship all items within 1 business day.No international shipping.Ade Advanced Optics first made its appearance in the firearms accessory industry by doing private label production for several major manufacturers and retailers. By soliciting feedback from both clients and end users, Ade Advanced Optics was able to overcome the challenges a new company often faces when entering a global market and industry, especially one as competitive as the shooting, hunting, and outdoors industry.