Saw two things that were really cool.
first up is a interesting spyder threaded barrel with a rain cover. it kinks up against the pump arm at the end but a little sanding will take care of that problem.
second is a back block that will allow you attach either a Tiberius stock/tank or a RAP4 stock/tank. i'm told they will come in black, when done.
i don't have any pricing on either of these, they are going to be released by GAT products.