Spikes Tactical STLS019 Spider Stripped Lower Receiver – Multi-Caliber

Spikes Tactical STLS019 Spider is a stripped lower receiver designed for AR-15 builds and component upgrades. It is made from 7075 T6 forged aluminum with a MIL-A-8625F Type III Class 2 hard‑coat anodized black finish. The Spider model includes the ST Spider logo on the magwell and features low‑shelf geometry that is compatible with RDIAS systems.

Key Specifications

• The receiver is made from 7075 T6 forged aluminum.
• The finish is MIL-A-8625F Type III Class 2 hard-coat anodized in black.
• The design is Multi-Caliber for multi-caliber builds.
• The listed weight is 8.60 oz.
• The fit is specified as AR-15.
• The product is a stripped lower receiver requiring installation of parts to complete.
• The action designation is Semi-Auto.
• The receiver is low-shelf and RDIAS-compatible.
• The model features the ST Spider logo on the left side of the magwell and bullet pictogram selector markings.
• The receiver requires a lower parts kit, buffer, and stock to complete a functional firearm.

This stripped lower is intended for builders and gunsmiths assembling or upgrading AR-15 platform rifles. Its forged 7075-T6 construction and durable Type III hard‑coat anodized finish make it suitable for long-term service in a variety of builds. The Spider markings provide distinct styling while maintaining compatibility with common AR-15 components for flexible, real-world assembly and customization.