The Best AR-9 80% Lower Receivers and Parts

Welcome to and our reviews of the best 80% AR9 lower receivers, parts, and accessories. Lower receivers are available in many different styles and made from materials ranging from forged aluminum to polymer. Selecting the best lower receiver for you AR9 rifle or pistol build is critical and then finishing it with the best tools, parts, and accessories will ensure the safest and best results.

80% receivers are NOT firearms as classified by the ATF -


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