This guide details the installation of a Drop-In Auto Sear (DIAS) into an AR receiver, a process that converts the firearm to full-auto. The DIAS is a self-contained, legal machine gun that can be moved between compatible AR platforms. Due to its NFA classification, understanding its legal status and transferability is crucial. The video highlights the extreme rarity and high market value of pre-1986 registered DIAS units.
This video, featuring NFA specialist John Keane, delves into the complexities of original versus non-original US military machine guns available on the civilian market. Keane explains how factors like post-war surplus, import regulations, and amnesty periods significantly impact the availability and legal status of these firearms. He highlights specific models like the Browning M1917A1, M1919A4, BAR, M16A1, and M60, detailing why some are scarce while others are more common, often due to how they entered civilian hands.
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