The San Tan Tactical STT-15 Pillar Upper Receiver is a lightweight billet upper designed with truss pockets to distribute stress across the platform. It is finished in black with a flat-top design for optics mounting.
The San Tan Tactical STT-15 Pillar Upper Receiver is a billet upper engineered for reduced weight and increased platform rigidity. Its truss-pocket geometry distributes stress across the receiver instead of concentrating it behind the barrel extension threads. The receiver uses a flat-top configuration designed for modern optic and accessory mounting systems.
Product Specifications
The manufacturer is San Tan Tactical.
The model is listed as STT-15.
The product type is specified as a Upper.
The subcategory is Upper Receivers.
The finish/color is Black.
The receiver is described as a billet upper and emphasizes lightweight construction.
The design incorporates truss pockets to distribute stress across the platform.
The intended mounting configuration is a Flat Top for optics and accessories.
The listed caliber compatibility is .223 REM/5.56 NATO.
The product name is SANTAN STT-15 PILLAR UPPER RECEIVER.
The UPC is 680599034060.
The STT-15 Pillar upper offers a purpose-driven billet design for shooters seeking a lightweight, rigid receiver to pair with modern rail lengths and optic setups. Its truss-pocket construction is intended to improve stress distribution across the platform, making it suitable for precision-oriented builds and competitive or range-focused applications.
Disclaimer: Our e-commerce site uses stock images for item photography. In most cases, these are completely accurate however there are some cases where the image may not wholly reflect the item being purchased. It is your responsibility to verify the UPC of the item you are purchasing from us with the manufacturer to confirm you are placing an order for the correct item.
