How to Unlock More Weapon Mod Slots in Gears of War E-Day

After getting yourself some weapons following the initial Locust outbreak in Gears of War: E-Day, you'll want to make sure you've always got the best loadout possible for any situation. While switching the weapons you have equipped can help, sometimes just attaching weapon mods can make enough of a difference to the effectiveness of a weapon in different combat situations. The problem is, you'll have noticed that you only have one weapon mod slot available on your weapons at the start and the rest are locked. Here's how to unlock more weapon mod slots in Gears of War: E-Day.