AR15.us is an educational site that explains the AR-15’s history, how it works, common myths, and the U.S. legal landscape, with sources for every factual claim. See our sources & editorial policy.
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AR15.us and JustAmmo (justammo.com) have the same owner. JustAmmo compares delivered ammo prices. We link to it in a few clearly labeled places and do not earn a commission from those links. See the disclosure.