SPIKES STLS019 SPIDER STRIPPED LOWER RECEIVER WITH BILLET MARKINGS MULTI-CALIBER

Spike's Tactical Spider Stripped Lower Receiver (STLS019) is a forged AR-15 platform lower receiver chambered for multi-caliber configurations, built for home builders, competition shooters, and sport shooters who demand a durable, mil-spec foundation for a custom AR-15 stripped lower receiver build.

Key Features

• Manufacturer Part Number: STLS019
• Platform: AR-15
• Caliber: Multi-Caliber (.223 Rem / 5.56 NATO compatible)
• Receiver Material: 7075-T6 aluminum, CNC machined from MIL-H-6088 forging
• Finish: MIL-A-8625F Type III Class 2 hardcoat anodized, black, inside and out
• Selector Markings: Bullet pictogram style, billet-engraved
• Trigger and Hammer Pin Size: Accepts standard .154 diameter pins
• Shelf Type: Low shelf, RDIAS compatible
• Weight: 8.6 oz
• Condition: Stripped, no lower parts kit, buffer, or stock included

Special Features

• The ST Spider logo is prominently milled into the left side of the magwell, giving this receiver a distinct identity that sets it apart from standard mil-spec lowers
• Milled manufacturer engravings provide billet-style aesthetics on a forged receiver, combining the strength of a forging with the clean look of machined detail work
• The low shelf design makes this lower RDIAS compatible, expanding its versatility for builders working on specific configuration requirements
• This is the same stripped lower Spike's Tactical uses as the standard foundation for all ST-15 LE rifles, reflecting its proven reliability in a professional-grade build platform
• The hardcoat anodize is applied inside and out, protecting all surfaces including internal channels against wear and corrosion over long-term use

Practical Benefits

• The STLS019 Spider Stripped Lower gives you a clean, verified starting point for a custom AR-15 build without paying for pre-installed parts you may swap out anyway
• The 7075-T6 forged aluminum construction handles long-term range use and field carry without adding unnecessary weight to your finished rifle
• Standard .154 pin compatibility means your preferred trigger group drops right in without modification or fitting
• The multi-caliber designation makes this lower suitable for a wide range of upper configurations, from 5.56 NATO to other AR-15 compatible calibers, giving you flexibility as your build evolves
• Whether you are assembling your first AR or adding another complete rifle to your collection, the Spider Stripped Lower pairs with any mil-spec upper and parts kit on the market

The Spike's Tactical STLS019 Spider Stripped Lower Receiver in multi-caliber is a proven platform and a solid fit for builders who want a mil-spec-grade foundation with professional-level finish quality from the first round to the last.