My search skills are eluding me. A while ago there was along thread here with a members 3d printed brass catchers that stuck to the reciever with magnets. Can someone point me to that thread??
The Brass Goat by Magwell Mounts is an innovative AR15 brass catcher designed to easily snap on and off the magwell of your milspec lower receiver. With a streamlined design, the Brass Goat is engineered to collect brass without jamming, and isn't a bulky accessory. The two-piece design can be...