Ahead of the Republic Day, Delhi Police's Special Cell busted two inter-state illegal firearms syndicates in the city with the arrest of four arms suppliers, officials said on Monday. Rohit Kumar (26), Pawan Kumar (28), Sunny (21) and Harshdeep (19), who hail from Punjab, have been involved in arms trafficking for over four years, they said, adding 18 pistols were recovered from their possession.