3D printing looks good Andy. I gree with Dave - from Bladerunner.

Don't know but double trigger and looks like something over the top of the barrel - will go and think about it. 
Whatever it is you have done a great job on making it if its 3D printed.

Hello all,
First time I've posted something for ages.
This is my latest project. Does anyone know what it is?
Cheers!

Here is the castle from the "Assault of Medieval Fortress" set.
Extra work has been done and I am still waiting for the moat to dry completely before I add another layer or two.

This was not a particularly great kit, but maybe I was having an off day.
The kit contains knights, soldiers, and so on. I am not sure of their make but they are really poor mouldings!

Good detail