This is the Army issue M240 SAW heat shield assembly. This heat shield allows heat to dissipate evenly, and as a result prevents a mirage of heat. The user also protects their skin from burns by using this item. The shield attaches the barrel or receiver of a rifle or machine gun. It also may have other items attached to it, such as a scope.
I.T.A.R. controls this item, therefore it cannot be shipped or carried outside the United States. THIS ITEM IS NOT FOR EXPORT.