Kexuan AR15/M16 Brass Catcher for Picatinny Rail. 223 Black. 223 brass on the ground after shooting Specifications for Kexuan AR15/M16 Brass Catcher for Picatinny Rail: Manufacturer: Kexuan Gun Model: AR-15 Color: Black Features of Kexuan AR15/M16 Brass Catcher for Picatinny Rail No interference with guns cycling Large mesh pouch to catch spent brass Bottom zipper for easy emptying Package Contents: Kexuan AR15/M16 Brass Catcher for Picatinny Rail Kexuan BC-AP-B: AR15/M16 Brass Catcher for Picatinny Rail. 223 Black