Seekins SIC Long Action AICS Magwell .300 Win Mag / .300 PRC

The Seekins SIC Long Action AICS Magwell is a caliber-specific magazine well insert designed exclusively for the Seekins SIC modular rifle system, enabling the platform to accept long-action AICS-pattern magazines for cartridges including .300 Winchester Magnum and .300 PRC. Part of the SIC's complete Caliber Change Kit alongside a barrel, bolt head, and magazine, the magwell swaps via simple takedown pins without tools, maintaining the SIC's zero-repeatability and system integrity across caliber configurations. Machined from high-strength aluminum and finished in matte black, the magwell features an ambidextrous magazine release and oversized well for fast, reliable reloads in field and tactical environments. Seekins SIC Long Action AICS Magwell 11700471F