San Tan Tactical STT-15 Billet Stripped Lower – .223/5.56

The San Tan Tactical STT-15 Billet Lower Receiver is a stripped lower designed for AR-15 platform builds. It is supplied unassembled to support custom assembly and gunsmithing projects. The receiver is finished in black and is listed for .223 REM/5.56 NATO. San Tan Tactical states they use high-quality machines in conjunction with American-made materials.

Key Specifications

• The manufacturer is San Tan Tactical.
• The model designation is STT-15.
• The product type is a Stripped Lower Receiver.
• The category is AR15 Lowers.
• The caliber designation is .223 REM/5.56 NATO.
• The finish/color is Black.
• The action is listed as Semi-Auto in the provided attributes.

As a billet-design stripped lower, the STT-15 provides a solid starting point for experienced builders and gunsmiths putting together custom AR-15 style rifles chambered in .223/5.56. Its straightforward configuration and factory finish make it suitable for projects that prioritize fit and dependable component alignment.