i have only heard a little bit about these new carbon fiber barrels. they seem the to be pretty sweet and amazingly light.but im just wondering whats so great about them. also a store called wolverine in red deer alberta they had a rifle and i believe i was the TAC 21 remigton chassis in 300 rum with a carbon barrel. when i seen this gun i knew i had to have it, unfortunatly money does not grow on trees for me and i was wondering where i could find a carbon barrel, bolt and trigger package that would fit into the chassis.