Our scriptwriter is not a gun for hire.

我们的编剧不是雇佣枪支。

This expression " I'm a gun (gun) for hire (hire)" means literally that you are a person who is given money to go and kill someone, but that's not what Jada is talking about.

“I'm a gun (gun) for hire (hire)” 这句话的字面意思是你是一个有钱去杀人的人， 但这不是贾达所说的。