AMCF S/A 1 SHOT SLED ACCOne-Shot Sled Black - Ruger SA American - SA Calibers - The One-Shot Sled is a direct magazine replacement for Ruger American rifles in short-action calibers, including many calibers used for hunting (350 Legend, 450 Bushmaster, 300 Blackouncluding many calibers used for hunting (350 Legend, 450 Bushmaster, 300 Blackout, .308 Winchest, .308 Winches