Seekins Precision SP Billet 223 Upper 5.56 AR15 AR-15 Receiver SP223
The Seekins Precision billet upper receiver is machined from a solid block of 7075-T6 aluminum to give you the perfectly rock-solid base platform from which to build your dream AR. Compatible with almost every MIL-SPEC rail system on the market, you will not be short of options.
Durable billet 7075-T6
Standard M4 feed ramps
Pre-installed forward assist and ejection port cover