the UMP-45 | Mudder is a Consumer grade skin, but the Desert Eagle | Mudder is an Industrial Grade skin. Those weapons, according to Valve are the most commonly used, and when the same finish on other weapons is applied to any of these weapons listed above, its quality is boosted up by one level. The USP-S, P2000, Glock-18, Desert Eagle, M4A4, M4A1-S, AK-47, and the AWP have a quality boost. The exterior quality hierarchy is the following, from best to worst:īased on the finish style used, the same skin may have different looks due to variations with texture offset and displacement. The closer it is to 1, the more scratched it appears.ĭifferent finish styles have different effects for lower weapon quality.Ī weapon's exterior quality will not degrade over time and can never be changed. The closer it is to 0, the cleaner the skin is. The wear quality is represented by a float value in game data.
The rarity of the exterior quality is based on a bell curve for most weapons, with extreme Factory New and extreme Battle-Scarred being the rarest. The exterior quality simulates randomized wear and tear on the skin.
A random exterior quality is chosen when a weapon skin is dropped, uncrated or received from a Trade Up Contract.