RALEIGH, N.C. (WNCN) — Before flying through Raleigh-Durham International Airport (RDU) Friday, Chuck Dennis is learning about 3-D printed replica firearms recently found in a carry-on bag by Transportation Security Administration (TSA) officers at the airport.

“[It] certainly looks real,” Dennis said when looking at a picture of the firearms found.

TSA officials tell CBS 17 that the 3-D printed firearms, like replica and novelty firearms, may be packed in checked bags — not carry-on bags.

Dennis agrees with the rules.

“If they were to pull it out, I don’t know that it’s a 3-D. I assume it’s a real gun,” he said. “People that see it perceive that it’s a real weapon, and you should check it like it is a real weapon.”

According to a TSA blog post, from February 10-23, officers found 161 firearms. 145 were loaded. This included a Glock 9mm found at RDU last Saturday.

For John McDonough, he’s never heard of anyone trying to carry on a 3-D printed replica firearm.

“I wouldn’t want to be sitting next to them,” McDonough said. “You don’t know what they’re going to do. You have no idea who you’re sitting next to anymore.”

TSA officials said they are not aware of any other 3-D printed firearms found at RDU.

While concerned, McDonough said the discovery also gives him peace of mind. He hopes travelers follow rules when it comes to packing firearms.

“I think the TSA is doing a great job of what they’re doing,” he said. “They caught it. It didn’t get on the plane. They did their job.”

Recently, North Carolina Attorney General Josh Stein recently joined a federal lawsuit that would prevent 3-D printed firearm blueprints from being released online.

For a link from the TSA on transporting firearms and ammunition, click here.