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Precision CNC machined from solid billet aluminum, the SP223 Billet Lower is the best AR lower receiver available. Far exceeding Mil-Spec requirements, the SP 223 has features not found on standard lowers such as the Seekins Precision Enhanced Bolt Catch, receiver tensioning screw, ambi-bolt stop assembly and an oversized trigger guard. These features combined with superior fit and finish make the SP223 the perfect foundation for any AR build.
