This replacement or spare magazine is compatible with the ATI Bull-dog 12 gauge. Do not be left without a backup, pick up this mag and be ready. #html-body [data-pb-style="62DF828D38E91"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF828D38E9D"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}