From http://neverenuffammo.com/ June 12, 2012 / Matt    Along with your barrel, your Bolt Carrier Group is the “Heart” of your AR rifle. So choosing the right one is very important to the overall quality and dependability of your rifle. The “Mil-Spec” or industry standard for BCG’s are as follows …… Carpenter...

Understanding the difference between 223 Remington and 5.56x45 NATO ammo is something that can confuse even the most experienced rifle owners. This can largely be attributed to the prevalence of incorrect 5.56 vs 223 information that has been published on the web in the last two decades. The problem is...