Damaged weapon all right inside (6)
I believe the answer is:
broken
'damaged' is the definition.
('broken' can be a synonym of 'damaged')
'weapon all right inside' is the wordplay.
'weapon' becomes 'bren' (Bren is an example**).
'all right' becomes 'ok' ('ok' can be a synonym of 'all right').
'inside' indicates putting letters inside.
'bren' going around 'ok' is 'BROKEN'.
(Other definitions for broken that I've seen before include "Busted, damaged" , "faulty" , "Interrupted; crushed" , "Made inoperative" , "Interrupted; inoperative" .)