A marksman rifle is a special type of gun that is designed for shooting targets from a long distance away. It is very accurate and can hit targets that are very far away. Think of it like a super precise toy gun that only grown-ups can use. It has a long barrel that helps the bullet go in a straight line and a scope on top that makes it easier to see the target. The marksman rifle is used by people called snipers in the army or police to keep people safe from far away. It's important to remember that guns are very dangerous and should only be used by responsible adults in very specific situations.