Adjustable LOP Butt Plate Assembly Auto (For Auto Shotguns)Adjustable LOP Butt Plate Assembly Auto (For Auto Shotguns) The Adjustable LOP is made from 5052 H32 alloy finished in anodized black and can be adjusted in or out 1 1 8. The pad plate can be moved up or down a full 1 1 2 and can rotate in and out to conform to a perfect shoulder fit designed for pump action and break open shot guns. The new center clamping cut forms a non slip positive locking system and is a one piece construction for a clean