These Five.45x39mm cartridges attribute clean up-burning Berdan primers, Whole Metal Jacket (FMJ) projectiles, and cost-preserving steel casings which are coated with a light-weight movie of polymer. The polymer coating shields the steel conditions from rust while in storage but also serves for a buffer among casings and chamber walls; this https://tacticalrounds.com/product-category/handgun-ammo-for-sale/best-9mm-ammo-for-self-defense/