Here's what it means to be the weapons master on a 'Terminator' movie

Arnold Terminator Genisys Melinda Sue Gordon finalMelinda Sue Gordon/Paramount/’Terminator Genisys’Arnold Schwarzenegger sporting a shotgun in ‘Terminator Genisys.’

A film set is home to numerous departments, whose workers all strive to make the best movie possible — and the weapons master may be one of the most intense positions of them all.Especially on a “Terminator” movie.

Any movie you see that features a weapon, whether a knife or a rocket launcher, has someone behind the scenes who is responsible for its safekeeping at all times.

That person is often called a weapons master but sometimes goes by the title armorer, weapons specialist, or weapons handler.

The position is a fairly new one in the over 100-year history of cinema.

For decades, prop masters were responsible for the dummy weapons used on movie sets. But around the 1980s prop departments began to hire people who not only would focus on the fake weapons (which either fire blanks or don’t fire at all) and the safety of the cast/crew, but also have encyclopedic knowledge of the weapons used for the film.

Harry Lu, a 25-year vet of the movie business, was one of the first people given the title of weapons master. Director James Cameron pegged him with the title during the making of 1991’s “Terminator 2: Judgment Day.”

Harry lu 2ParamountHarry Lu on the set of ‘Terminator Genisys.’

Since then, Lu has worked on some of the biggest action movies of the past few decades, including “Armageddon,” the “Pirates of the Caribbean” franchise, and the two most recent “Mission: Impossible” movies, among others.

Lu’s most recent work can be seen in “Terminator Genisys,” in theatres now. And as he told Business Insider, one of the biggest challenges on the film was finding a suitable gun for the film’s female lead, Emilia Clarke, who plays heroine Sarah Connor.

“The original script called for a gun that,” realistically, “would be way too big for Sarah Connor to be lugging around,” Lu told Business Insider. “We ended up giving her a gun that by the time shooting started she would be able to handle with no problem.”

To get Clarke prepared to use guns in the film, Lu had Clarke go on a training regimen similar to the one he gave Linda Hamilton (who originally played Sarah Connor) in “Terminator 2.”

Terminator Genisys Emilia ClarkeParamount PicturesEmilia Clarke also likes a good shotgun in ‘Terminator Genisys.’

Along with weight training for months before production began, Lu would take Clarke out to the gun range once a week for two hours using real ammunition. Lu said this is done so actors can feel the weight and real force of the firearm in order to replicate the actions when on set. Clarke was also taught how to take apart the rifles and handguns she used for target practice and reassemble them.

As “Terminator Genisys” varies in time — travelling back to 1984 when the franchise’s original film, “The Terminator,” was set, as well as taking place in 2017 and 2029 — Lu also had to go over the script before shooting began to make sure the weapons were authentic to the era in which they were seen being used. Especially in regard to the past.

Terminator Genisys Melinda Sue GordonMelinda Sue Gordon/Paramount/’Terminator Genisys’Jason Clarke, left, and Jai Courtney with weapons from the year 2029.

“In the script, the 1984-era police were using Beretta M9 handguns,” Lu said. “Having owned a gun shop in LA during the ’80s, I’ve sent a lot of cadets to the police academy, so I know all the equipment from that era. In the case of the Beretta, I knew the academy didn’t get that until 1988 or ’89, so we used revolvers instead for those scenes.”

Lu estimates that around 700 weapons were used on “Terminator Genisys.” And though there is plenty of danger and excitement that goes into making sure all of those are used safely and properly on set, there are times when being a weapons master requires just making sure the weapons look their best.

“In the armory scene,” said Lu, recalling a scene in which the Terminator (Arnold Schwarzenegger) brings Connor and Kyle Reese (Jai Courtney) to a large bunker of guns he has amassed, “that alone had 200 weapons. And me, my son, and another person had to wipe them down every day.”

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