Shooting Brass Catcher to Catch the Spent Cartridge Shells 5 Rail Fixers Share One Cather ● Collect the cartridge shell, brass catcher, while shooting, avoid shells scattered everywhere. And you can also use the collected shells for rebuilding new cartridges. ● Strong steel frame support the brass catcher strong enough. ● Anti heat cloth bag, and a layer of steel mesh implanted ensure it can withstand high temperature shells falling from the firearms ● Slide rail keys can permit you adjust the brass catcher front/back, left/right so that it can fit your firearms. ● The zipper opening in the bottom can quickly pour out the collected shells without taking off the catcher.