These guys put a nice commercial-grade AR upper to the test… I’d give my hind teeth to have access to that much “fun” ammo! I’m going to look in to the Bolt Carrier Group (BCG) by SRC Relia-Bolt that they used.
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I spent most of my early career in law enforcement, working as a Deputy Sheriff, Police Officer, and later as the County Sheriff. I left law enforcement to attend graduate school and entered the private sector as a senior executive in safety and security. These days I'm a consultant, writer, blogger, and web developer.