Davidson loading ramps are designed to fill in the magazine cut-out on Remington 600's, Model 7's, and Model 700's when converting a rifle to feed as a single shot. Made from aluminum, these loading rams are intended to be glued in for a permanent conversion to single shot. Shooters looking for a temporary single shot conversion should use a Score High Magazine Follower which inserts into your magazine on top of the existing magazine follower. Mfg: Davidson