Strike Industries Ultimate AR Dust Cover for .223/5.56 - Black - Texas - The Strike Ultimate Dust Cover (UDC) is designed for quick, easy installation and removal without the need for specialized tools or handguard disassembly. Constructed from high-density polymer, it offers enhanced durability and functionality compared to traditional mil-spec dust covers. Available in multiple designs and black or Flat Dark Earth (FDE) finishes, the UDC features an adjustable detent set screw that allows users to compensate for receiver wear over time. This adjustment helps maintain a secure, consistent fit against the upper receiver, improving overall fitment and helping ensure the dust cover stays securely closed. Features: Spring-loaded internal detent rod for easy installation and take-down; Constructed with lightweight durable polymer material weighing in at only .3oz; Cut-out window for easy disassembly on any AR15 receiver; Will never corrode rust or fade; Will never deform or get bent out of shape; Comes in a variety of designs; True Seal internal lip that seals the port tighter than traditional dust cover designs; Built-in adjustable detent set screw to compensate for wear on the receiver;