Because I am never one to leave well enough alone, I had to remake the main barrel section with a couple of modifications from the original. This one has 5 square cut outs rather than 3 like on V1 and it has a rear coupling to link up with the rear housing. This one is also 2.5" longer than V1. The new shape made this mold a bit tricky to work out but, I do love it when a plan comes together...