TacStar Brass Catcher w/Picatinny Rail Mount Black. No more walking around bent over trying to find where your brass flew The Brass Catcher simply clamps to the Picatinny rail of flat top ARs. No firearm modifications are needed. The mounting bracket is adjustable and low profile so it can be positioned to clear optics or scopes. The heat resistant catch bag can hold up to 120 .223 cases. When you are ready to empty the bag simply pull it off of the mounting rail and dump out the shells The bag also can be unsnapped from its aluminum deflector plate for thorough cleaning. Specifications for TacStar Brass Catcher w/Picatinny Rail Mount: Manufacturer: TacStar Gun Make: AR Platform Color: Black Additional Features: Up to 120 .223 Features of TacStar Brass Catcher w/Picatinny Rail Mount: Clamps to Picatinny rails on flat top ARs. No Modifications needed. Shell bag pulls off mount for easy emptying. Low profile and adjustable. Holds up to 120 .223 cases. Heat resistant bag. Package Contents: TacStar Brass Catcher w/Picatinny Rail Mount TacStar 1081240: Brass Catcher w/Picatinny Rail Mount Black