Don't get me wrong, I'm in favour of metal. You can do wonders with it, especially when it comes to design(CNC or by hand). I'll always prefer metal to plastic. But let's take an open gun for example, which is already heavy by nature, a heavy comp' in front, mount, scope such as a c-more...etc'. Add a stainless grip, a fully loaded 170mm mag, and it becomes much heavier, for good or bad?
I'm sure the guys and gals at SV - know what they're doing.