Keep your shooting area clean and keep hot brass from landing on you with the Caldwell AR-15 Brass Catcher. This handy accessory captures and holds around 30 empty .223 cartridges straight from your modern AR-15. This wire frame and mesh fabric brass catcher attaches to the forearm of any AR platform gun with hook 'n' loop webbing. The wire frame holds the shape of the catcher, allowing the brass to enter bag without disrupting the bolt function or the gun's cycle. A convenient zipper at the bottom of mesh bag makes emptying simple. Dimensions: 9 x 4 x 2. Manufacturer model #: 122231. Catches empty cartridges from AR guns immediately Keeps shooting area clean - prevents hot brass from landing on shooter Quickly attaches to forearm with hook 'n' loop webbing Holds approximately 30 rounds of spent brass Bottom zipper for easy emptying Won't interfere with gun's cycling