Check the listing for details. Brass straight-line percussion capper. Color: Gold, Condition: Used, Made in United States. Listed at 30.00 USD. The Brass Straight-Line Percussion Capper is a versatile tool designed for hunters and shooting enthusiasts who use black powder ammunition. Made of brass with a gold color, this ambidextrous capper ensures precise and consistent performance in the field. Its straight-line design allows for easy and accurate capping of percussion caps, making it a reliable accessory for those who enjoy the sport of hunting with traditional firearms.