The Ruger American uses detachable mags, but I have single loaded rounds and put them directly in the magazine. Not easy with the smaller ejection port.
But I don't consider that a negative. These little rifles are proving to be a great value. Between my brother and I we own 4. All shoot great.
Two Predators in 308 and 6.5 Creedmoor
One Ranch in 5.56 (this is what I think you want)
One Compact in 223.
