I thought the M1 had a removable box clip. Wasn't it the old M1 Garand that was the top feed? I've had quite a few different military type riffles. Since most of my shooting is hunting, my favorite is the SKS. It's more accurate than the AK47 with the same ammo. Also, it's never jammed on me. The stripper clips work pretty well but I also have a removable box clip for it. Great pig/coyote/mt lion shooter.