For anyone still interested I finally found the barrel marking. After shining a flashlight through the hand guard holes numerous times and not seeing any markings I removed it. The barrel marking was underneath the gas tube. It was marked 5.56 NATO. So I'm happy I can use both 223 and 5.56...
Clearly most of the responders to my question are far more experienced than I am. I am looking for expert opinions/advice. I accidentally ordered 100 rounds of 556 ammo. I live in MD and legally own an Anderson AR 15 with the Heavy Barrel as required by our state. I have tried looking...
Is it legal for a Maryland resident to order and ship a banned magazine to his brother in NC? I went through the online Sportsmansguide order process to have it shipped to my MD address and as expected received a message that the order could not be completed. I established a secondary NC...