A user on Instagram posted a Rhino Firing video, check it out here - http://instagram.com/p/qeYUzhlq-b/
Confirms the barrels "pump" and alternate firing, a bit tough to see the trigger setup but looks like there is one, but two handles. That is possibly the accelerator trigger on top. Hopefully we can get a better look in the coming weeks!
Labels: blaster, demo, nerf, new nerf 2014, outdoor, play, preview, rhinofire, toy, turret