Pistol exhibiting good safety mechanism (5)

I believe the answer is:

glock

I'm a little stuck... Click here to teach me more about this clue!

'pistol' is the definition.
I know nothing about this answer so I can't judge whether this works.

'good safety mechanism' is the wordplay.
I cannot really see how this works, but
'good' could be 'g' (abbreviation) and 'g' is present in the answer.
'mechanism' could be 'lock' (lock is a kind of mechanism) and 'lock' is present in the answer.
No letters remain.
This explanation may well be incorrect...

'exhibiting' acts as a link.

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