Exclusively for Insurgents.
Loadout for the suicide vest should be under the "Armor" section.
Suicide bombers should only be given a pistol with 1-2 reserved magazines; no primary weapons whatsoever.
No other explosives but the suicide vest are available for the suicide bomber.
Cool down for this feature is up to you.
This addition to the PvP modes would give memorable experiences and annoying fun to the players who use it or are used against it.