A 3-in-1 utility brush for firearm maintenance is a versatile tool that combines multiple functions into a single devise. Compact Design: This 5-inch utility brush is compact and easy to handle, making it suitable for cleaning smaller gun parts and hard-to-reach areas. This brush is designed for a wide range of gun cleaning tasks, including cleaning bolts, bolt faces, rails, receivers, and other gun components. Durable and Easy to Store.