Melissa McCarthy is "afraid" of guns.
The 45-year-old actress had to work with firearms in both 'The Heat' and 'Spy' but admits she wasn't "super-comfortable" shooting any scenes with them.
Discussing her role as a CIA operative in 'Spy', she said: "I had trained with guns for 'The Heat' as well, but I'm afraid of guns.
"I'm not super-comfortable with them but it's a part of law enforcement so I wanted to make sure I handled them right...
"I don't ever want to look like I don't know how to hold a gun because nobody gets to do that job if they don't know what they're doing."
And Melissa admits it was tough to look "cool" while shooting action scenes because they are so taxing, but she insists that's part of the "fun".
She said: "The fighting, the running - I was just constantly like, 'Who am I chasing now and why am I in heels?'
"I've got a lot of dialogue and I'm running four blocks and there are stairs.
"Budapest, where we shot the film, is so beautiful and Paul [Feig, director] kept finding these staircases. By the fifth take, you've done 20 flights.
"I think anyone, by their 20th flight, is a little out of breath. It's hard to look cool when you're gasping for air but that was the fun of it."