Slight leakage... ok, quite a bit that needed extra clamps. this half has taken about 2.5kg (roughly 5lbs) of silicone. it was all going well, but as the mould was almost full it started to leak a little. i managed to slow it down and eventually stop it. i guess i didn't put enough bolts on it, or i didn't tighten them enough... or it could be that i just didn't make a good shell!
anyway: first pic (slide to right) shows gun in mould. second shows a painted layer over to capture detail. third shows the final messy thing.