steps florya takes proving he's a man (physically)

After he cuts his hair, which is where my group decided was the point of transformation, he is brought along to scavenge for food and supplies, unlike how earlier he was left behind. That alone proves be has physically become a man. Since they see him as an adult rather than a pitiful child. The 2nd step I believe when he stopped the man with the horse, he threatened to shoot the man for his horse.