One thing I have noticed about this thread is the moaning about prices..... Blame Arabia and america! Plastic is oil based, and who sets the prices for the oil? oil prices drop enough then GW models and FW models may stay the same price or drop too...... but I digress...... to make a sentinel armed with a multi melta all you need is one of the multi meltas from the demolisher and a standard sentinel (Mars pattern) slice the barrel from the multi laser, trim the back of the multi melta untill its completely flat stick it together...... et voila! One sntinel armed with a multi melta. for fuel tanks use the flamer tanks...... it works gentlemen, it works......