I own one of these guns and they are really nice shooting rifles, I love mine so much!! The only bad thing is I have a 10rnd mag instead of a 15rnd mag, that drags when you just want to shoot, because with this rifle that's all you want to do.
This weapon is also very light and compact which is a plus when out hunting or shooting!
Bluing is a passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish. Bluing is most commonly used by gun manufacturers, gunsmiths and gun owners to improve the cosmetic appearance, provide limited resistance against rust of the firearm, improve surface durability to tangential scratching, and reduce glare to the eyes of the shooter when looking down the barrel of the gun.
Hope that answers you question.... - D. J.