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.