The Ruger One-Shot sled is a new accessory for short-action Ruger American rifles. Used in place of the Ruger American magazine, the One-Shot sled allows for quick and easy loading of a single cartridge. The sled provides smooth, single-round feeding, useful to slow down a new shooter or simplify loading during range sessions. The Ruger One-Shot is also ideal for hunting particularly in states with single-shot hunting regulations, such as Illinois. The Ruger One-Shot is a direct magazine replacement for Ruger American rifles in short-action calibers, including many calibers used for hunting (350 Legend, 450 Bushmaster, 300 Blackout, .308 Winchester, 6.5 Creedmoor, etc.). The sled ships with a magazine well to adapt rifles configured from the factory to accept AR-, AI-, or Mini Thirty-pattern magazines. When inserted in the rifle, the One-Shot sled fits flush with the stock and does not interfere when carrying a slung rifle or shooting from a bag or backpack.