"We heard Mr. Trump is excited about receiving it," Limoges said, ahead of Trump's Tuesday evening rally. "But the Secret Service obviously had some concerns."
Limoges and the other Black Op Arms owners planned to present the rifle to Trump backstage, ahead of his campaign rally in a high school gym. Secret Service showed up early to secure the weapon and remove its firing pin, which makes the weapon inoperable.
The Secret Service "didn't want to actually bring Mr. Trump to the gun store so they came today and picked the rifle up," Limoges said.
The unusual gift comes the same day that President Barack Obama
rolled out a series of new executive actions designed to tighten gun rules by expanding background checks and requiring licenses for anyone "in the business of selling firearms."
While Obama assured the public Tuesday that "this is not a plot to take away everybody's guns," Limoges said plenty of his customers still believe otherwise.
"Every time Mr. Obama has made an announcement like that we have definitely seen an increase in our business," Limoges said. "People are definitely afraid about what Mr. Obama might do to take weapons away, so it's been good for us."
Even Trump has insinuated that Obama's executive actions are the first step toward total confiscation.
"Pretty soon you won't be able to get guns," Trump told CNN's Chris Cuomo earlier this week.
Limoges said he didn't necessarily think Obama's move would hurt his industry.
"I wouldn't say it would be problematic. We're definitely for safe gun ownership," Limoges said.
But the problem is "not the people that come in legally and buy guns. It's the people that do it illegally," Limoges added.
It took the Black Op Arms shop about four hours to finish Trump's custom-built rifle. For their finishing touch, they gave it the serial number 145.
"He's our number one choice for president and we're hoping he is going to be the 45th president so we gave him that serial number," Limoges said. "We just thought it would be a nice gesture."
It's unclear what Trump -- who lives in a penthouse in Manhattan -- will do with his new gift. New York has a ban on many types of assault weapons.
Limoges said rifles like the one he planned to give Trump are often used for target practice.
"A lot of people use them as coyote guns, varmint guns, that type of thing," he said. "We hope maybe Mr. Trump will buy a second home in New Hampshire and be able to use his Black Op Arms rifle here in the state."