The most common and most likely answer to this crossword clue is the 9 letter word SAWED-OFF
I've seen this crossword clue in The Times
S
A
W
E
D
-
O
F
F
Buddy explains!
The straight part
We know that "As some guns may be for concealment," is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case as some guns may be for concealment, = sawed-off.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SAWED-OFF mean?
SAWED-OFF noun- A shotgun with a barrel and sometimes buttstock which have been shortened by sawing them off; a sawed-off shotgun.
- Shortened by sawing.
- Short (as though something that should be there isn't).