Can you find a lock grinder during the "Quell the Bandit Threat" mission?

So I've recently started playing Rage, and during the "Quell the Bandit Threat" mission, I noticed the following locked door inside the bandits' hideout:

As the prompt kindly informs me, I'll need a lock grinder to open that door. However, after clearing out all the bandits and looting everything I could find, I did not come across a lock grinder.

Is there one well hidden on the premises, or will I have to return to this door later if I want to find out what lies behind it?

No.

From all my searching, I never found one, or the parts to make one. You will be able to return later for a follow up mission, Missing Person, which you find on the job board in Wellspring.

You can also return to the Ghost Hideout while roaming freely. I just tested and got in the door.