Steal and carry off weapon (5)

I believe the answer is:

rifle

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'steal' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for rifle that I've seen before include "Go through in search" , "Security provider with stock" , "Long-barrelled weapon, normal army equipment" , "Lifer (anag.)" , "Root" .)

I've seen this clue in The Times.

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