You know that your AR-15 puts out major .223 brass in a hurry. This CaldwellA(R) AR-15 Brass Catcher is the reloader's best friend, making it easy to retain casings and prevent hot brass from hitting anyone (even you) nearby. Attaches to the forearm of any AR with grip strip Wire frame holds it in shape Captures and holds approximately 30 rounds Zipper at the bottom of the mesh bag for quick, easy emptying Absolutely no interference with the gun's cycling. Order today!