This is a crude weapon, however it will show you how to create, animate and script a new weapon in torque.
Feel free to edit, correct spelling or grammer, or add content.

Step 1 - The model.
Set blender to side view, 3 on the keypad.
Scale the default cube along the Z axis to 0.5. Use the ctrl key to make exact incremental steps.
Scale the Y axis to 3.0, again use the ctrl key to make exact steps.
Switch to front view using the keypad '1' and scale the X axis to 0.5.
Now we should have a plain rectangular box.
Switch to 'Edit Mode' by press the Tab key Select the bottom face using Box Select, the 'b' key.
Press 'e' to extrude region then press the left mouse button. This will make a face we can extrude later, but right now we want to scale and position it first.
Scale the face we just made to X 0.3, Y 0.2.
Grab 'g' key the selected face, lock in the y axis, press the 'y' key, and move it to the upper portion of the model.
With the face still selected, switch to side view '3' on the keypad
Press 'e' and extrude the region along the z-axis to 1.50
Grab the selected face and move along the Y axis to 0.5, you should have something similar to the screenshot.

Step 2 - The Animation
coming soon

Step 3 - The Script
Coming soon after

TO DO
1. Add screenshots.
2. Fix spelling errrors.
3. Improve formatting.