Muzzle attachments (8)
I believe the answer is:
bayonets
'muzzle attachments' is the definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Maybe they are linked in a way I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for bayonets that I've seen before include "Daggers fixed to rifles" , "Knives fixed to the ends of rifles" .)