Re: SHTF rifle
Bravo Company, CMMG, RRA, Colt, S&W are all on a very even playing field as far as function goes with the AR15 family. At work we have both colt and RRA. The thing thing that sets the two apart is price and availability. RRA are far easier to obtain and are less expensive.
If you are looking for an AR and price is a factor, buy the RRA. The RRA will serve you well and if you decide to sell it the buyer will recognize the value of the name brand.
Concerning the SHTF weapon. Several have posted valid reasons to go with one weapon system vs another. I agree with going with the AR platform. The AR system is easy to learn, user friendly, easy to work on, there are millions of them in circulation which means parts will be easier to find than lever actions, various 22s, Garands, various scatterguns etc...