The patent pending SI UDC enables users to attach and detach the cover in 5 to 10 seconds with ease (stock dust cover will take more time to remove)! It 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.
New features of the ultimate dust cover enhanced version include the added cut-out window on the rod for easy disassemble and is thinner than the original to be compatible with all AR15 receivers on the market and is even lighter, weighing in at only 0.3 oz.
Additionally, The "True Seal" Lip has been slightly modified to provide an even better seal then ever before with the patent pending UDC-E (Ultimate Dust Cover- Enhanced Version), the modified version of the original UDC for mil-spec receivers.
Patent pending spring-loaded, internal detent rod for easy installation and take-down.
Constructed with lightweight durable polymer material weighing in at only 3 oz.
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
Patent pending "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
Note for the AR-15/M16/M4 .223/5.56 and will fit Billet Uppers!!!
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WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.