Mark Serbu presents the "Micro 50 BMG," a compact variant of the Serbu RN-50. The video details its legal classification as a Short Barreled Rifle (SBR) to circumvent restrictions on armor-piercing handgun ammunition. Ballistics analysis using QuickLOAD software demonstrates significant retained energy from its short barrel, comparable to larger magnum cartridges. Live fire footage highlights the intense muzzle blast.
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