12.7x42 (.50 Caliber)

12.7x42 (.50 Caliber) is one of the popular big-bore AR-15 calibers 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. 12.7x42 is also an incredibly hard-hitting caliber that can shoot up to 400 grain bullets, making it ideal for hunting large game at short distances. Find high performance 12.7x42 rifles, uppers, and barrels all focused on performance and accuracy from Bear Creek Arsenal and experience an exceptional shooting experience every time!