Someone else built them, are they accessible in the game?

https://www.youtube.com/watch?v=XA12_WjeR64

I want a rad roach silencer on my gun where you just stick one on the barrel and it silences your shots.

I see you've watched Postal before, eh?

Yes, either a radroach or dogmeat, the only good use for him

I'm calling PETA on you.

Your right they would youthinize me like they did with those dogs they "saved" from their owners

I was attacked by one. I had like three molerats attacking and then one just fricken exploded. Scared the [censored] out me. Don't know if we will be able to start a mole rat farm in one of our settlements though which would be needed to build them.