Cartridge Buttstock Holder is Allens version of a classic shooting accessory. The flexible holder is made from durable, heavyweight elastic that fits snugly to the stock without interfering with holding or aiming. The loops are uniformly sewn in an easy-access position so your s are reliably in place when you need them. installs in seconds on most long guns without slipping, and is designed to withstand years of outdoor use. 12 Gauge Buttstock Holder, 3.5"W, 5-s, Black, Polyester, 2052A.