The billet UDC houses all the parts needed to install and uninstall quickly. While keeping the rest of the upper assembly intact, the dust cover can be easily installed in under 5 seconds. After the success of the aluminum dust covers, Strike Industries has decided to offer them now in a machined billet construction.Introducing the next iteration of our ultimate dust cover line - The Billet UDC. The billet UDC houses all the parts needed to install and uninstall quickly. While keeping the rest of the upper assembly intact, the dust cover can be easily installed in under 5 sec. After the success of the aluminum dust covers, Strike Industries has decided to offer them now in a machined billet construction. Features: Quick and easy installation/removal Built-in double seal for improved debris prevention Solid billet aluminum construction for durability