PMC X-Tac 50 BMG 660gr FMJBT Rifle Ammo – 10 Rounds – PMC ammo is manufactured in South Korea by a top defense contractor. These 7.62x39mm rounds would be just at home on the other side of the Korean Peninsula, but instead they have come to the US and will make an excellent load for your SKS or AK rifle. This ammunition differs from many other 50 BMG imports in that it uses non-corrosive Boxer primers (instead of the usual Berdan primers) and reloadable brass cases. If you want to squeeze a little more reliability out of your rifle, these rounds might be your best bet. Brand PMC Category Centerfire Rifle Rounds Model X-Tac Casing Material Brass Application Performance,Protection