Punjab Police, State Special Operation Cell, Amritsar busted a cross-border smuggling network, recovered pistols of 30 bore with live ammunition and apprehended four operatives, Jugraj Singh (Chiri), Kulbir Singh (Nannu; Kalu), Arshdeep Singh and Nachattar Singh, all residents of District TarnTaran, said Director General of Police (DGP) Punjab on Wednesday.