VISM AR15 Mesh Brass Catcher Black. The Visol Brass Catcher is a plastic bag that hangs on the inside of yThier AR-15's receiver keeping the spent brass safe and soundly out. When the 30 rounds are full pull the brass out through the small opening and it falls into the bag. No more having to fumble with a large catcher or remembering to empty it out at the range. The VISM Brass Catcher is emptied at the end of each shooting day. Specifications for VISM AR15 Brass Catcher: Manufacturer: VISM Gun Model: AR-15 Color: Black Features of VISM AR15 Brass Catcher Attaches to receiver with hook and loop strap Holds approximately 30 rounds of spent brass Wire frame to hold shape Mesh bag with zipper for easy emptying of brass Package Contents: VISM AR15 Brass Catcher VISM CVBC3014B: AR15 Mesh Brass Catcher Black