There are problems with the 5.56x45mm NATO round, especially out of short barreled guns — mainly that it’s loud and underpowered compared to what the enemy is using. Many have tried over the years to fix this problem, coming up with wacky calibers like .300 Whisper, 6.8 Rem Special, 6.5mm Grendel, and more recently Wilson Combat’s 6.8mm offering. They all work, but they all have fatal flaws. AAC has come out with a new round that they claim works with existing AR magazines, bolts, bolt carriers, and fixes all the short distance and short barreled problems of the 5.56mm NATO round while still being as quiet as an MP5-SD. Naturally we asked them to put up or shut up, and they invited me out to their Atlanta, Georgia factory to do just that. The put up part, that is.
Should I Buy A .300 Blackout Upper For My AR?
One of the reasons that the AR-15 platform is America’s most popular rifle is its versatility and ease of customization. For most people, changing calibers is usually as simple as buying another upper and swapping it out. And that’s what makes adding 300 Blackout blackout capability to your AR-15 so attractive. The cartridge has become … Read more
