Patent attributes
A device for covering a firearm ejection port, the firearm including a receiver having an interior and an exterior side, the ejection port defined in the receiver, the ejection port having an upper peripheral edge and a notch defined in the upper peripheral edge. The device includes a backing member positionable across the ejection port from an interior side of the receiver. A cover is positionable over the ejection port from an exterior side of the receiver. A fastener extends between the backing member and the cover, the fastener being operable to selectively tighten the backing member and the cover together to clamp the cover over the ejection port. The cover is positioned over the notch in the ejection port when the cover is clamped over the ejection port to prevent gas in the receiver from passing through the notch.
