Seekins Precision SP223 Gen2 Billet Lower Receiver

The Seekins Precision SP223 Gen2 Billet Lower Receiver (Seekins part no. 0011000008) is precision CNC machined from solid billet aluminum, engineered to exceed mil-spec requirements for a truly premium AR-15 foundation. This SP223 features an enhanced bolt catch, a receiver tensioning screw, an ambidextrous bolt stop assembly, and an oversized trigger guard, none of which are found on standard lowers. Built by Seekins Precision, a manufacturer known for match-grade AR components, this billet lower combines superior fit and finish with genuinely useful functional upgrades for any serious AR build.

Key Specifications

• Chambered for .223 REM/5.56 NATO, the standard AR-15 platform caliber.
• Precision CNC machined from solid billet aluminum, exceeding mil-spec requirements.
• Features Seekins’ Enhanced Bolt Catch for smoother, more positive engagement.
• Includes a receiver tensioning screw to eliminate upper/lower play.
• Equipped with an ambidextrous bolt stop assembly for left- and right-handed shooters.
• Built with an oversized trigger guard for easier operation with gloves.
• Classified as a Stripped Lower Receiver, ready for your choice of internals.
• Weighs approximately 10.9 ounces.
• Uses custom screw-in dowel pins in place of roll pins, easing assembly and future service.

Frequently Asked Questions

What makes this a premium lower over a standard forging? It’s precision CNC machined from solid billet aluminum with features like a receiver tensioning screw and an ambi bolt stop not found on standard lowers.

Is this a stripped lower receiver? Yes, it’s stripped and ready for your choice of fire control group and furniture.

Buy the Seekins Precision SP223 Gen2 Billet Lower Receiver

Start your next AR build on a genuinely premium billet foundation. Order the Seekins Precision SP223 Gen2 from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, from our AR15 lowers lineup.