More specifically, your E-11?
I've just completed a 2nd Doopydoos complete resin kit. Both have a few mod parts, mostly knurled screws, spring, etc.
One weighs 1167 grams, the other, with a thick-walled internal steel barrel, weighs 1517 grams. Very solid (!)
interested to hear what the heaviest E-11 custom blaster out there is