The most common and most likely answer to this crossword clue is the 6 plus 2 plus 2 letter word RARING TO GO
I've seen this crossword clue in Independent
R
A
R
I
N
G
T
O
G
O
More clues leading to the result RARING TO GO
- Ready for more artillery, surround country
- Artist getting call to visit African country is keen to start
- Keen artist joining band got back to leader of Orchestra
- Got roaring drunk, showing enthusiasm
- Got roaring drunk, showing great enthusiasm
- Champing at the bit, gunners round republic
- Primed for action, gunners surround country
Buddy explains!

The straight part
We know that "Primed for action" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case primed for action = raring to go.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.