Hi folks. New to the forum and I really appreciate the RIA section. Ordered my first Rock Island full size 1911 yesterday. Are other brand nàme 7 round flush fit magazines compatible with this pistol? Don't really care for the extension on a full size pistol. It will likely be used only for range (pasture) targets ànd such; perhaps an armadillo or two. My other pistols ànd revolvers are for carry / home defense. Thànks.