A Florida man packed more than a punch after a verbal argument with a UPS Store manager turned into a violent assault when he angrily attacked the manager and pistol-whipped him.

Security footage captured the man, dressed in a bright orange shirt and black shorts, as he began to attack the UPS store manager. 

"I’m not effing playing with you, dawg," said the customer.

"I’m not playing with you, either," said the manager.

A building housing a UPS Store with large windows

Eugene, Oregon, USA - July 20, 2014: UPS Store location in Eugene, Oregon.  UPS Store is a subsidiary of the United Parcel Service (UPS) and is a way for customers to ship packages domestically as well as worldwide. (iStock)

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The manager describes how the suspect first lunged towards him and began throwing punches. 

The suspect proceeded to repeatedly strike the employee in the face.  

"He started hitting me with a handgun a couple of times," said the manager. "Everybody started running in the store."

The Miami store manager tried to calm the suspect down, fearing that he "was gonna get shot," but to no avail. He adds that he was hit in the back of his ear with the gun, as well.

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Following the assault, the customer walked away, but vowed to return. 

A handgun and bullets on a wooden table

Handgun with ammunition on a dark wooden table. (iStock)

"He said, ‘I’m gonna come back and finish what I started,’ and I don’t think he was talking about the return," the manager said to 7 News.

According to the UPS employee, the altercation derived from an Amazon return for a printer that the customer said was damaged.

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Vivian Menendez called the police after witnessing the incident in the store.

The UPS logo at a UPS Store

This Tuesday, Jan. 29, 2013,  photo, shows a UPS store in Hialeah, Fla.  United Parcel Service Inc. says it was slowed down in the fourth quarter  of 2012, by weak global trade and a disappointing holiday-shopping season.  (AP Photo/Alan Diaz) (AP Photo/Alan Diaz)

"If you’re gonna come to a store, don’t be aggressive," said Menendez. "There are other ways you can do it. You don’t have to threaten people’s lives. You don’t have to be so aggressive. We can talk things out."

While the store closed for the day and opened the next following the incident, the manager was uncertain of returning to work. 

Police are currently investigating the incident.