The RIA Defense RD4P Cobra is a piston-operated rifle designed for military and law enforcement, prioritizing reliability in harsh conditions. It features a custom bull barrel for superior heat dissipation, allowing sustained full-auto fire. Notably, it can fire underwater without chamber deformation, exceeding capabilities of some established platforms. The rifle boasts fully ambidextrous controls and an adjustable gas block, with semi-auto versions planned for public release.
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