Quamuddin (28), Niyazuddin alias Niyazu (27) and Udaibir Upadhay alias Panditji (50), all hailing from Uttar Pradesh, were apprehended by a team of Special Cell of Delhi Police.
Seven country-made rifles and four country-made pistols along with five cartridges of 7.65 mm, and two cars have been recovered from their possession, police said.
"The gang procured country-made rifles and pistols from Etah district of UP and sold them to criminal elements in Delhi and NCR," Deputy Commissioner of Police (Special Cell) Sanjeev Kumar Yadav said.
Accordingly, a team of Special Cell deployed informers in and around Delhi, UP West and UP East. Acting on specific information that a huge consignment of illegal weapons would be supplied to Niyazu near Shashtri Park Metro station, a trap was laid and two of the accused were nabbed, they said.
On their instance, Udaibir was overpowered and apprehended on Friday, near EDM Mall, East Delhi, they said.