The most common and most likely answer to this crossword clue is the 6 letter word RAPIER
I've seen this crossword clue in Financial Times
R
A
P
I
E
R
More clues leading to the result RAPIER
- Weapon of Royal Artillery atop bridge support
- Back up, holding good sword
- On landing stage, artillery weapon
- Charge that is right for sword
- Sharp hit — that is right for sharp sword
- Gumshoe in stern stood up and pointed weapon
- Artist gets support from weapon
- Back up when pierced by Greek character’s sword
- Soldier gets support for weapon
- Artist covering seaside feature and weapon of old
Buddy explains!

The straight part
We know that "pointed weapon" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pointed weapon = rapier.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 RAPIER mean?
RAPIER noun- A slender, straight, sharply pointed sword (double-edged, single-edged or edgeless).
- Extremely sharp.
- Cutting; employing keen wit.