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Tag Archives: lower receiver

ATF: Putting a Stock on an AR-15 Lower Does Not Make it a Rifle

Many hobby builders ask the question “when is my AR-15 lower receiver a rifle?” The answer is not what many internet forums and even some gun shop staff profess. According to letters from the ATF Firearms Technology Branch, the division responsible for answering technical questions on ATF regulations and firearms law, a lower receiver only becomes a rifle once a ...

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