Level iiia Protection Safe Life Defense armor reliably defends against: all common handgun rounds including .357, 9mm, 45acp, all the way up to .44 magnum. Level iiia protection even protects the wearer from shotgun rounds including 00 buckshot, 12 ga slugs and even submachine gun rounds. In conjunction with our level 4 rifle plate our armor protects against rifle threats all the way up to .30-06.