I got a response from a reference services archivist at NASM today. She states that their Arado never had guns, which is not in dispute, and then she quotes Smith and Creek's book that Lyric has already quoted. I assume we'll continue to agreeably disagree. 
Your letter only differs to mine then on one point. They said on mine that the AR 234 V21 was the only AR 234 a prototype to have rear guns.
That of course was a C model.
If nothing else they are consistant with regards to rear guns.
Moving on I have a Japanese magazine on the AR 234 & of course I have no idea what any of it says. I do like this magazine though as they always seem to have something in it that no other publisher seems to have.
They have the drawings below on the forward facing gun pod for the night fighter version. It has some details on the fairings that surround the gun pod & the drawings give a better idea of the size & shape specifics that I have not seen before.
So if they do decide to turn the guns to the correct direction on the AR 234B

for AHII maybe they can use the drawings below.


