Secure arms from Communist Russia (5)

I believe the answer is:

truss

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'secure arms' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'from communist russia' is the wordplay.
'from' indicates a hidden word.
'TRUSS' is hidden within 'communist russia'.

Can you help me to learn more?

(Other definitions for truss that I've seen before include "advocate of proper punctuation" , "Support - bundle - cluster" , "Hay bundle; tomato cluster" , "Type of support" , "Bind - structural framework" .)

I've seen this clue in The Guardian.

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