Does marlin XS7 and XS7Y caliber 308 have detachable magazines?

Nope...They're Top Fed,Internal Box,which I prefer as far as reliability.Great rifles BTW,their accuracy is awesome(Aint never seen or heard of one that would'nt shoot 1/2"group at 100 yards).Im planning on getting one in 25-06 for a target rifle.The only downfall with those rifles is the trigger,its got about a 7-8 lb pull and is realy stiff and creapy,so just to throw it out there,if you buy one I would recomend the Rifle-Basix trigger which will make the trigger a crisp 3-1/2 lb pull,that'll tighten up your groups real nice....Great Choice...