This EFK FIRE DRAGON® Conversion Factory Length Barrel is made out of 416 stainless steel which gives you the strength and durability you need. The hardness of the EFK FIRE DRAGON® Conversion Factory Length Barrel is 43-45 RC and being heat treated in a vacuum furnace, this EFK FIRE DRAGON® Conversion Factory Length Barrel is made to last. This EFK FIRE DRAGON® Conversion Factory Length Barrel allows you the accuracy you desire when long distance shooting or at the target [...]