Being new to AR-15 scene, there was a point in my life when I was gonna purchase a Delton or CMMG AR. After discussing it with a few friends of mine who are LE and Border Patrol, they suggested I spend more and get something better. Then I was gonna get an Armalite or RRA. After consulting with my friends again, they were still hesitant and told me to buy either BCM or Daniel Defense. When I asked them why, they just told me "Those companies are combat proven." Those two words stuck with me for a while, what did it mean to be combat proven? I figured it meant an AR-15 that has seen duty in either Military, LE, SWAT, etc Now what's confusing me is that I've been watching a TV show called "DEA" and they use RRA AR-15's. If the DEA issues the RRA, wouldn't that make RRA a combat proven AR-15 company? I know police officers where I live use Bushmasters. Wouldn't Bushmaster be combat proven too? What is the real difference between a company like Bushmaster and a company like Bravo Company?