The Strke Industries Enhanced Ultimate Dust Cover is constructed of a high-density polymer making it more durable and functional than the traditional dust covers. The Ultimate Dust Cover features an adjustable detent set screw in order to compensate wear on the receiver and increase or decrease opening power (To adjust detent: use small flathead driver and depress the ball detent and adjust as necessary.). Choose multiple designs to customize your AR! 
Updated features of the Ultimate Dust Cover Enhanced Version include the added cut-out window on the rod for easy disassemble and that it has been made thinner than the original weighing in at only 0.4oz!
 Features
Patent pending spring-loaded, internal detent rod for easy installation and take-down
Constructed with lightweight durable polymer material weighing in at only .4oz
Cut-out window for easy disassembly on any receiver
Will never corrode rust or fade
Will never deform or get bent out of shape
Patent pending "True Seal" internal liColorBlackMaterialPolymerWeight0.4 OunceCompatible WithAR-10, LR-308p that seals the port tighter than traditional dust cover designs
Built-in adjustable detent set screw to compensate for wear on the receiver
Color
Black
Material
Polymer
Weight
0.4 Ounce
Compatible With
AR-10, LR-308