Bilal Bou Melhem's charges come after police found six guns and thousands of illegal cigarettes during raids at two properties in Sydney's west.
The 53-year-old was allegedly punched and kicked before being forced into a car by four balaclava-clad strangers in northern Sydney about sunrise on February 24.
He was allegedly held hostage in Dural - a suburb on Sydney's bushy northern outskirts that recently made headlines over another kidnapping - for more than 48 hours before his rescue by tactical police during a raid.
Melhem was taken to hospital in a stable condition.
A 16-year-old boy was detained at the scene, but 20-year-old James Munzer wasn't arrested until Wednesday, when police charged him with offences including participating in criminal activity and breaching bail.
Police allege Munzer was among the group of alleged kidnappers who abducted Melhem from a Mount Pritchard tobacconist.
Munzer did not apply for bail and will return to Campbelltown Local Court on May 6.
Melhem's woes continued on Wednesday, when police raided the Mount Pritchard tobacco shop and another address in North Parramatta.
They allegedly found six firearms, 39,000 illicit cigarettes and firearms parts.
He was charged with five counts of possessing an unauthorised pistol and a range of other gun offences.
The 53-year-old was refused bail in Fairfield Local Court on Wednesday and will return to court on May 7.
The kidnapping came days after police found the body of elderly widower Chris Baghsarian, who was abducted from his Sydney home on February 13 in a case of mistaken identity.
Investigators believe Mr Baghsarian was killed at a makeshift stronghold in Dural before his body was dumped on the night of February 14, a half-hour drive away in Pitt Town.
Two people have been charged over the alleged kidnapping and murder of the grandfather.
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