Most aftermarket AR-15 barrels to have a 5.56 chamber, also known as NATO. This is the MIL standard and should…Read More >
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As far as handling and ergonomics, the AR-15 and AR-10 are brilliantly designed and function the same. Some new shooters may not realize that the AR-10 7.62x51mm rifle actually came first. In fact the AR-10 .308 rifle competed with the FN FAL and M14. In the end, the rifle was downsized into the .223 caliber AR-15, which was a response to the AK-47, but that is history and we are dealing with differences in application today.
The newest and brightest addition to the AR-15 family is a 5.56mm-diameter cartridge with more punch and long-range potential than the .223 Remington. The .224 Valkyrie is designed to remain supersonic to 1,300 yards, but design and performance are not always one in the same. The Shooter’s Log put the Valkyrie through its paces, even if we did put our thumb on the scale by using a $4,000 Wilson Combat Super Sniper.