Daniel Roberts was getting ready for bed on Sunday night at his home in Fort Mill, S.C. He had to be up early for his day job, as a truck driver for a construction company based out of Charlotte, N.C.

Then he received a Facebook message from a friend, who was asking: Why was Mr. Roberts being featured on the fifth episode of Sacha Baron Cohen’s prank Showtime series, “Who Is America?”

He had no idea. He also had to dig deep to remember who Mr. Cohen was to begin with.

Unbeknown to Mr. Roberts, he had taken part in one of the more embarrassing segments of the show thus far. In it, Mr. Cohen posed as Erran Morad, an Israeli antiterrorism expert who was pretending to offer on-camera training segments to help Americans fight Islamic terrorism.

Mr. Roberts is the founder and president of Youth Shooters of America, and his 13-year-old daughter has gained some renown as a competitive shooter, having started when she was just 6 years old. Mr. Roberts has appeared in cable news segments to defend gun rights, including a particularly heated discussion with Piers Morgan, where Mr. Roberts said he hoped nothing would change about gun laws after last year’s mass shooting in Las Vegas in which 58 people were killed and several hundred injured.