Two ways to go. If you want a SHTF/TEOTWAWKI rifle, the Trijicon ACOG with .308 reticle is the way to go.
For hunting/plinking, I would get one of the 1-4 0r 1.5-5 scopes from Leupold, Nikon, etc.
Of course, it you can afford it, a Swarovski, Nightforce, S&B.. .............
History fails to record a single precedent in which nations subject to moral decay have not passed into political and economic decline. There has been either a spiritual awakening to overcome the moral lapse, or a progressive deterioration leading to ultimate national disaster.
If you think a strong military is expensive, think about what a weak one would cost