Seekins Precision Billet upper receivers combine strength and perfection into a rock-solid platform to build your dream AR. All AP uppers are held to the same quality expectations. Seekins Precision’s standard uppers are compatible with most Mil-Spec aftermarket rail systems and are based off of the traditional design – allowing multiple options on which to build from.
Precision CNC Machined from 7075-T6 billet aluminum, the SP223 Billet Lower far exceeds Mil-Spec requirements. The SP223 has features not found on standard lowers such as the Seekins Precision Enhanced Bolt Catch, receiver tensioning screw, ambi-bolt stop assembly and an over-sized trigger guard. These features combined with superior fit and finish make the SP223 the perfect foundation for any AR build.