The Spikes Tactical Spider Stripped Lower Receiver (part no. STLS019) is forged from 7075-T6 aluminum and finished to Spikes’ signature high standard, giving builders a rock-solid, American-made foundation for an AR-15. It carries the distinctive Spider logo prominently on the left side of the magwell, the same marking Spikes uses as the standard lower on its ST-15 LE-series rifles. The receiver is multi-caliber compatible and RDIAS compatible, giving builders flexibility in both chambering and trigger group selection. Spikes backs it with a MIL-A-8625F Type III Class 2 hard coat anodized finish for long-term durability.

Key Specifications

• Forged from 7075-T6 aluminum for a strong, mil-spec receiver.
• Finished with a MIL-A-8625F Type III Class 2 hard coat anodized black finish.
• Features the Spider billet marking on the left side of the magwell.
• Multi-caliber compatible with standard AR-15 pattern uppers.
• Machined with a low-shelf fire control pocket for wider trigger compatibility.
• RDIAS compatible for builders who want that trigger group option.
• Ships as a stripped lower receiver, ready for your parts kit and stock.
• Built to Semi-Auto AR-15 pattern specifications.
• Weighs approximately 8.6 ounces bare.

Frequently Asked Questions

What is the Spider marking? It is Spikes Tactical’s signature billet logo, featured on the left side of the magwell and used as the standard lower on their ST-15 LE rifles.

Is this lower stripped or complete? It ships stripped, so you will need a lower parts kit, buffer, and stock to complete your build.

What calibers does it support? It is multi-caliber compatible, accepting standard AR-15 pattern uppers in the chambering of your choice.

Buy the Spikes Tactical Spider Stripped Lower Receiver

Build on a proven Spikes Tactical foundation. Browse more AR-15 lower receivers and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.