The Osorio Selectiva is a unique, handmade Nicaraguan .22 Rimfire machine pistol, registered under the NFA. It features a clever telescoping bolt, dual triggers for selective fire (full-auto via sliding motion, semi-auto via pivoting), and a VZ61-style folding stock. Despite its handmade nature, it exhibits sophisticated engineering, including a fixed firing pin with a double-strike ridge for reliable ignition.
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