The AR-30A1 has earned a reputation as a super-accurate, long-range rifle, and now it's little brother, the AR-31, is looking to build upon that reputation in 2014. The new AR-31 is chambered in .308 (the AR-30A1 is chambered in either .300 Win. Mag. or .338 Lapua) and can be used with Armalite's AR-10B double-stack magazines, meaning you can use 5, 10, 15, 20 and 25 round mags. Even the smaller version of the rifle is a beast. It has a total length of 45.4 inches and weighs 14 pounds. It will retail for about $3,400.