Did Sig Sauer Just Make the Ultimate AR-15 Rifle?

While only FN and Colt supply AR-style rifles to the U.S. military, plenty of American gun manufacturers supply arms to other militaries worldwide. Czech and Georgian units are known to use Bushmaster carbines, a large stockpile of Georgian Bushmasters was captured during the 2008 war with Russia. However, in recent years, Sig Sauer, Inc. has stepped into the market, competing with Colt, Bushmaster, and smaller companies like Rock River Arms. Sig Sauer, Inc. makes a variety of AR-15 style r