Those arrested were identified as Jaspreet Singh, alias Jassa, resident of Handowal Kalan, Hardip Singh alias Deepa of Jallowal and Kuldeep Singh alias Deep, of local Sheikhan Mohalla, police said.
Two pistols and four live cartridges were recovered from them, they said.
Police said seven alleged members of KLF, including those arrested, were booked under relevant sections of the Unlawful Activities Prevention Act, 1967.
According to police, Harjap Singh, currently in the US, and Avtar Singh, who is in Italy, were allegedly instigating Sikh youths of the state to indulge in "anti-social activities".
A case under relevant sections of the Unlawful Activities Prevention Act 1967 (amendment 2012) and the Arms Act has been registered against all the accused in Chabbewal police station, police said.
