The AR-500 Might Just Be the Most Powerful Rifle on the Planet The adaptive nature of the AR-15 rifle platform has made it one of the most modifiable weapons in history Kris Osborn · December 28, 2019 Please leave this field emptyStay Updated with Warrior Maven Subscribe for daily military news and updates delivered straight to your inbox. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.