Abstract: A single loading enhancement device (sled) for a repeating firearm comprises a body where the external features of the body are in the form of an original firearm magazine. The body comprises a bottom end, a front surface, a rear surface, a pair of side surfaces and a top end. The top end of the body further comprises a pair of guide rails and a guide channel. The pair of guide rails is integrally formed into the top of the body and oriented approximately parallel to the body and extending from the front surface of the body toward the rear surface. The guide channel is defined by the guide rails and set into the top end of the body, the width and depth of the channel being slightly larger than the radius of a firearm cartridge and the guide channel is adjusted to prevent mechanical interference with the firearm's action and moving parts.