Freedom 12.7x42 [Factory New]

12.7x42 (. 50 Caliber) is one of the popular big-bore AR-15 caliber to take the firearm world by storm in the early 2000s. One of the first things you'll likely notice when picking up a 12.7x42 round is the heavily rebated rim, which fits a bolt head designed for the 7.62x39mm cartridge.