Noreen BN36 upper receiver assemblies are a great way to change up your BN36 Assassin model to a different caliber. You can choose any of the following calibers for the long range assassin 30-06 Springfield , 270 Winchester, 25-06 Remington, 7mm Remington Magnum, and 300 Winchester Magnum. These uppers will only fit the gen1 and Assassin models, they will not fit the BN36X3 version.
