The most common and most likely answer to this crossword clue is the 7 letter word COPIERS
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More clues leading to the result COPIERS
Buddy explains!

The straight part
We know that "pirates?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pirates? = copiers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COPIERS mean?
COPIERS noun- A machine that copies graphical material; a duplicator.
- A person who copies documents.
- A program or process that copies.