New Delhi: The Supreme Court on Thursday said that pellet guns cannot be banned as long as the existing advisory permits their use for crowd control in exceptional circumstances by security agencies, while making it clear that allegations of specific misuse can be examined on a case-by-case basis. “Prayers are not to use pellet guns. In exceptional cases, police regulations permit the use of pellet guns. Grover said as regards the petitioners, metallic pellets were used, and they were recovered from their bodies. “I am not saying pellet guns should not be in the armoury of the RAF or not.