As some of you saw on the forgeworld blog (and natfka under the post of a new weapon), forgeworld is getting ready to release a model for a twin linked dual devourer. This is really only necessary for the flying hive tyrant - as the wings and legs leave only one arm slot for weapons - though you certainly could put it on a carnifex and figure out a way to connect it to the second arm slot. In case you missed it, here is the link, , and here is the photo for comparison/review purposes:
The dual devourer build on the flyrant has been massively popular since the release of 5th edition, and it is a safe bet that many Tyranid players have taken a stab at converting their own - if this came out a couple years ago, I imagine it would sell a lot more. With that said - I imagine there is a market for this bit, as many hobbyists don't like converting and this may be a step up from slapping on fleshborer hives and calling it a day. If you've already converted your own set from some other MC arms and gaunt devourers, I think it's going to be less of a 'must buy' for you. Sure the bit looks good enough, but, in my opinion, there isn't a wow factor that makes me want to shell out ~10$ for a pair (pure speculation on price).
On the blog, we have two different examples/tutorials on conversions for dual devourers:
|Evan's - link|
|Ron's - link|