Leaderboard

The trick to knowing which ones you can double up on and which ones you can't is to look at the icon/image of the retrofit. If the icon/image is the same, you can't double up. If they're different, you can use both. This is why you can use an accuracy refit, an aim time refit, and the level 2 refit that gives you both level 1 accuracy and level 1 aim time. That 3rd retro has a different image than either of the others, so even though it duplicates both of their level 1 versions you can use it with them.