Alpine factory bears shock (4,5)
I believe the answer is:
rock plant
'alpine' is the definition.
(I've seen this before)
'factory bears shock' is the wordplay.
I cannot quite see how this works, but
'factory' could be 'plant' (I've seen this before) and 'plant' is located in the answer.
'shock' could be 'rock' (rock can mean to shock or stun) and 'rock' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for rock plant that I've seen is " Alpine".)