Halo 4 is the first Halo game to introduce this feature.
From September 24 to November 4, 2012, 343 Industries and GameStop offered the Arctic Battle Rifle skin, with the most votes, to customers who pre-ordered Halo 4 at GameStop. On October 8, 2012, the Arctic Battle Rifle skin was chosen as the winner of the first round, and became one of the three exclusive pre-order bonus items from GameStop.
The name of the DMR skin "Noble" is a reference to Noble Team, who made their first appearance in Halo: Reach, along with the DMR.
Currently, the Storm Rifle is the only loadout weapon that does not have a weapon skin.