Piston vs Direct Impingement ... recoil and accuracy comparison ... Sig MCX

Mad Max Palmetto AR-10: https://www.youtube.com/playlist?list=PLAnK0KlKOCRxgoohU1xZONCCSw0jc-p0G


AR-15 Scopes and Pistol Optics for the Apocalypse: https://www.youtube.com/playlist?list=PLAnK0KlKOCRznIseYioC4jvYNeRVkiCE7

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