San Tan Tactical STT-15 Lite, Lower Receiver, Multi-Caliber

Engineered for strength, weight reduction, and superior performance, the San Tan Tactical STT-15 Lite Lower Receiver is a top-tier choice for custom AR-15 builds. This multi-caliber lower is CNC-machined from 7075-T6 billet aluminum and optimized for ultra-lightweight performance without compromising structural integrity.

Perfect for competitive shooting, tactical builds, or lightweight rifle setups, the STT-15 Lite combines San Tan’s renowned craftsmanship and innovation in a sleek, minimal design.

San Tan Tactical STT-15 Lite Lower Receiver – Multi-Caliber | Lightweight Billet AR-15 Lower | Precision CNC Machined in the USA

Made in the USA, San Tan Tactical’s Lite Lower Receiver has the same great aesthetics as San Tan’s standard STT-15 Receiver but incorporates a significant weight reduction. It features a 1.38″ integrally machined magazine well flare, safety selector markings, set screw trigger creep adjustment and upper take down tension adjustment, captured rear take down pin detent and spring, oversized winter trigger guard, and a no roll pin design. It assembles using the included threaded dowel screw. The STT-15 Lite Lower does not included STT Ultra Grip Kit…

Key Features of San Tan Tactical STT-15 Lite, Lower Receiver, Multi-Caliber:

• Platform: AR-15

• Caliber: Multi-caliber compatible – supports .223 Rem, 5.56 NATO, .300 Blackout, and more

• Material: 7075-T6 billet aluminum – aerospace-grade durability

• Design: Lightweight cutouts reduce weight while maintaining rigidity

• Finish: Type III hardcoat anodized – matte black corrosion-resistant finish

• Enhanced Magwell: Flared magwell for faster, smoother reloads

• Trigger Guard: Integrated oversized trigger guard for glove-friendly use

• Receiver Tensioning System: Allows for a tight fit with your upper receiver

• Compatibility: Works with all MIL-SPEC AR-15 parts and uppers

• Proudly Made in the USA – precision crafted by San Tan Tactical in Arizona

Why Choose the STT-15 Lite Lower Receiver?

The STT-15 Lite is built for those who demand a high-performance, lightweight, and rugged lower receiver for their AR platform. It’s ideal for shooters seeking balance, reliability, and superior fit in every build.

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