The most common and most likely answer to this crossword clue is the 8 letter word BAYONETS
I've seen this crossword clue in The Daily Telegraph
B
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Buddy explains!
The straight part
We know that "Sticking weapons" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sticking weapons = bayonets.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 BAYONETS mean?
BAYONETS noun- A pointed instrument of the dagger kind fitted on the muzzle of a musket or rifle, so as to give the soldier increased means of offence and defence. Originally, the bayonet was made with a handle, which needed to be fitted into the bore of the musket after the soldier had fired.
- A pin which plays in and out of holes made to receive it, and which thus serves to engage or disengage parts of the machinery.