Turns vanilla gun turrets into a basic tier with 100 hidden, uncraftable Basic Magazines (50% damage) that cannot be carried and disappear when the turret is mined. Three research tiers unlock preloaded standard, advanced and uranium turrets. Recipes: Standard = 1 gun turret + 100 firearm magazines; Advanced = 1 gun turret + 100 piercing magazines; Uranium = 1 gun turret + 100 uranium magazines.