Gautam Yadav was arrested from Jamalpur express after three 7.65 mm pistols, 65 rounds of ammunition, six magazines and one mobile handset were recovered from him, said Promodesh Saha, railway station GRP officer-in-charge.
The youth, hailing from Bihar's Dariapur area, was carrying the arms to be delivered to a Kolkata-based businessman, he said.
Yadav had been arrested on an earlier occassion few months back by the Government Railway Police for possessing arms.