sentences:  The player can purchase weapons at various gun shops, which provide an unlimited supply of the weapon in serviceable condition, along with manuals to upgrade weapon's reliability and accuracy.More weapons can be unlocked at the gun shop by completing missions involving the destruction of competitors' arms convoys for the gun shop owner.Weapons can also be picked up off of fallen enemies, but they are always in their most degraded condition and can only be used for a short period of time before jamming and ultimately breaking down completely.