This was from the first time twin-linked autocannons were a legal armament for Dreadnoughts (post 2nd-Edition, anyway). One of my favorite conversions.
Wow, i couldnt tell thats a conversion if you havnt mention it.
I have tried ( and failed ) to build mine, guess im stuck with spending
$ on FW ones T-T Want to build another one for the other arm? it'll look
great almost like the Hydra flak gun.