Hello! well here is one of my very very much not street legal grey knight terminators. I picked up a dark angels upgrade kit awhile back from online and it came with some terminator extras so I thought "hey...why not?".
Yeah! I made like this, heavily armed terminators, one with a "hand" from a dreadnought, but didn't yet paint. I think, such way to arm devastators is to get supreme firepower to bring down the Emperor's foes!