Fortis Manufacturing, Inc., Billet Dust Cover, Fits AR-15, Gray WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov Material: Aircraft Grade 6061-T6 Aluminum Weight - 0.4 oz Length - 3.13" Width - 0.885" Type III Hardcoat Anodize Made in the USA! Includes Spring and C-Clip Product Description The Fortis Billet Dust Cover is manufactured from a solid piece of aircraft grade aluminum. This ensures overall durability and reliability vs other polymer versions. Easy to install and upgrade your existing ejection port dust cover on your .223/556 compatible builds. Will fit into mil-spec AR15 uppers and will quickly upgrade the form and function of your AR15.