Dust Doors on the LR-308 / AR-10 platform are a barrier between the action and elements. This prevents dirt and debris from getting into the working bits of the rifle. Under constant spring pressure, the action of the bolt carrier reciprocating or being manually cycled the dust door will open up allowing ejection out of the door. During travel, the dust door can be closed and held in place with a captive detent holding it against a groove cut out in the upper receiver.
About this Dust Door: The patent-pending SI UDC 308 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 a small flathead driver and depress the ball detent and adjust as necessary.).
Material: Polymer - Using a synthetic polymer, this dust door retains the strength and durability of the original dust doors while saving weight.
Compatibility: LR-308 Size Dust Door
Color / Finish: FDE
Brand: Strike Industries
Platform: LR-308 / AR-10
Model: Standard Ultimate Dust Cover .308 - FDE
Color / Finish: FDE
Please note: If the listing says "In-Stock" it means we have the item(s) in stock. Please check this LINK to view our most up to date shipping status.
Warranty, Returns & Terms:
MMC Armory offers a 30 day return, refund and exchange policy. You must email or call to obtain an RMA number prior to any return, refund, or exchange. All returns must include the original order number, receipt or invoice, along with the customers billing address, shipping address, contact phone numbers, contact emails, and RMA number. Returns, refunds, and exchanges may take up to two weeks, not including transit times, for processing after we have received return product. Return shipping costs will be the responsibility of the returning party, with the exception of the wrong item being received or on warranty exchange during the first 30 days after delivery. Items returned for warranty will only be replaced or exchanged, no refund given on warranty items.