During The Great Silence (orig.: Il grande silenzio) the sheriff is escorting Loco out of Snow Hill to the higher orders for supposedly attacking Silence. During their travel they make a stop in the middle of nowhere when Loco asks to go to the toilet. He gets freed from his horse, sits down in the snow, then suddenly produces a rifle right out of the snow and ultimately shoots the ice below the sheriff's feet, effectively killing him.
But where on earth did he get that rifle from? They were in the middle of nowhere and he certainly didn't smuggle it with him. How did he know there was a rifle? Did he place it there and has this been alluded to in a previous scene I just missed/forgot?