"Bonus damage towards the groin instead of headshots."
— In-game description.
Below the Belt (referred to as "Below the belt" in-game) is an Epicgun perk in Call of Duty: Infinite Warfare exclusive to the RPR Evo - Bosozoku variant. It changes the multipliers of the weapon variant, causing damage multipliers to switch for headshots and the groin. This in turn causes more damage to be dealt near the groin as opposed to towards the head.