Usually synthetic stock is a bit lighter than a wood stock rifle.
Myth!
Factory synthetic stocks often weigh MORE than wood. Sometimes about the same and in rare cases just 1-2 oz less. I haven't weighed those exact rifles, but I've weighed many, many stocks over the years and that is what I've found. My guess is that the factory specs are accurate. Even most of the high end fiberglass stocks such as McMillan etc. weigh about the same as wood in their standard fill. You don't get a lighter stock until you get to the stocks made from Kevlar. An Edge stock will be about 1/2 lb lighter than what comes from the factory.
The laminated stocks are typically about 1 lb heavier than standard wood stocks, and most of the mid grade stocks like B&C that use a metal chassis are a touch heavier than factory wood, about 1/4 lb heavier.
