I keep getting questions about my brass catcher. I use the catcher's from Tactical Brass Recovery http://www.tacticalbrassrecovery.com/ I have three different versions now. The first bag I have been using for three years now the zipper broke on it and they promptly replaced the whole bag. The first bag is still working great, I bought a second bag about a year ago it was almost Identical to the first but with a beefier mount. About four weeks ago I got the latest catcher called the operator this thing is an improvement in almost every way it has four positions to fold the bag out, it has a throw lever attachment, and it has a brass trap in the bag to keep the brass in when the rifle is hanging.