Modeling splinter pods?

i have been updating my beast masters (I haven't played DE since 3rd edition) and instead of skyboards I put them on giant bats. The effect is quite nice until I remembered reading that the skyboards have a pair of built in weapons which my bats are lacking.

My old metal hellions don't have these splinter pods (so I guess I need to make them some too), and the pictures I found online don't show the underside of the boards in any detail.

Any ideas? I was hoping for something a little more organic looking than 2 pipes sticking out of the bats' guts/wings.

Thanks for any input

you could always use the PGL given that comes with the warrior spue and put it on the beastmaster. Its the grenade pack off the back. That way instead of it being on the bat, its on the rider.

I'd just use any left-over splinter rifles (2 per bat) from the warrior kit on the underside of the wing, next to the bat body. I too have the old metal hellions and LOTS of old splinter rifles. I plan on cutting the receiver of the rifle about in the middle, maybe a little toward the gun butt and pin them to the metal wings of the skyboard, close in toward the engine intake with the barrels sticking out to be seen/noticed