Mule Kick allows the player to have 3 guns. If the player has two guns and he buys one it will appear as if he traded a gun. The player needs to go through his weapons and will see if he has three. If the player goes down, he loses a weapon. The player must be on PlayStation Network, Xbox LIVE, or online on a PC for Mule Kick to appear on all maps. It will appear on Moon whether or not the player is online. It costs 4000 points and is the most expensive perk yet.
The jingle for Mule Kick was essentially removed, however, it can be found in the game files.
"Legend tells us of a man, a hero in a tortured land, where Señoritas lived in fear. Their lonely nights in deep despair, he was EL BURRO! (Hee-Haw, Hee-Haw). Across the fields, across the plains. He ran so fast he dodged the rain. He was El Burro! He hurried in to save the day, gun in hand, and thrice they say. He was strong like a Mule, he was stubborn like a Mule, he even kicked like a Mule, El Burro! (El Burro!). A man not equal, so they say. But some and more, it's just the way! He was El Burro! He was EL BURRO! EL BURRO! (Hee-Haw, Hee-Haw)"