This Patent Pending Neoprene cover is designed to fit theHolosun SCS MOS Scope. This weather resistant cover will protect the scope in all environments and is soft enough to keep from scratching the scope. Sold in a 2-pack only! Covers are made of Soft Santoprene Stretchable Rubber Our Covers will NOT work with Metal Shrouds! ****DOES NOT INCLUDE SCOPE**** *We have been made aware that from time to time customers will need to make small adjustments to our covers. Our covers are super easy to modify with a hobby knife or scissors if you also want backup Iron Sights. You can also trim around the bottom if you have a recessed mount on your gun. Please send us a message if you have any question we can also send a photo showing adjustment samples.