Hello, gents. I am curious to have an in depth discussion on the absolute most reliable set up in a battle rifle.

I understand that .22lr is the best "survival round," but we're talking battle rifles here, not just something to put squirrels on the table.

Personally, I believe a 5.56 AR-15 is the best way to go here in the states. Now before you jump on that, just hear me out. This is my reasoning:

1. The AR platform is the most common in North America, being used by military, law enforcement, and civilians. This means a surplus market of parts that are universal.

2. The 5.56 chambering allows use of the two most common rifle rounds that are likely to be scavenged/acquired, being the NATO round itself and the ever popular .223, which sets this setup apart from the not-nearly-as-common 7.62x51 NATO, aka .308

3. Accuracy and weight play a huge role, along with the modularity of the platform. It can be made to fit nearly any job.

Okay, now keep in mind, this is my humble opinion. Now I'd like to hear yours.