Explosives are a unique weapon class featured in Combat Arms. Unlike the other weapon classes, explosives can hurt and even kill enemies indirectly, meaning that the player using explosives doesn't need to see the enemy to kill him/her. They are mainly under the 'Support' Weapon category, though a few are classified as Primary Weapons, 'Specialist' Weapons and Assassin Weapons, such as the RPG-7, M32 Grenade Launcher, and the Explosive Crossbow.
Players who thinks explosives are unfair because they can reach players indirectly would use the Weapon Restriction type "No Explosives." This disallows players to use any explosive weapons, hence "No Explosives". This is seen frequently in smaller maps like Junk Flea and Death Room, where a large amount of explosives can cause lag and overall absolute chaos. The No Explosives setting helps counter Grenade Spam.