Check the listing for details. Picatinny Rail Brass Catcher – Heat Resistant Shell Collector with Zipper. Color: Black, Condition: New, Made in United States. Listed at 17.99 USD. Designed to mount securely to any standard Picatinny rail system. This heat-resistant brass catcher helps collect spent casings during range use while maintaining durability under extended shooting sessions. The adjustable design ensures proper alignment with compatible rail-mounted platforms. A zipper bottom allows quick and easy emptying. Ideal for range shooting and training use. The adjustable design ensures proper alignment with your rifle’s ejection port for smooth and consistent shell capture. A convenient zipper bottom allows quick and easy emptying without removing the unit. Ideal for range shooting, training, and hunting, this brass catcher helps keep your shooting area clean while saving time collecting spent casings.