San Tan Tactical PILLAR Lite Billet Upper Receiver - STT-15 PILLAR LITE UPPER
Click to see full view
San Tan Tactical
Overview
The San Tan Tactical PILLAR Lite Billet Upper Receiver is a stripped upper designed specifically for the AR-15 platform, crafted from durable 7075-T6 aluminum. Its billet construction offers enhanced precision and a sleek aesthetic, making it a solid choice for builders looking to create a lightweight and reliable upper assembly. This receiver is frequently used in builds featuring a mid-length gas system and chambered in .223 Wylde, appealing to those who seek versatility in ammunition selection.
Specifications
San Tan Tactical PILLAR Lite Billet Upper Receiver - STT-15 PILLAR LITE UPPER
Build history on GunPartPicker
Builders on GunPartPicker first added the San Tan Tactical PILLAR Lite Billet Upper Receiver - STT-15 PILLAR LITE UPPER to a build in February 2026.
It was hard to find in September 2026, in stock on only 12 of the 24 days we checked, and today only Optics Planet has it in stock. Prices barely moved in September 2026, holding around $199.11, so there haven't been real sales lately. Buying today, the lowest price is $235.99 at Optics Planet, above September's low of $199.11, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
Popular alongside upper receivers on GunPartPicker
Aero Precision M4E1 Complete Lower Receiver W/MOE SL Grip & SL-S Carbine Stock
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Bravo Company M16 Bolt Carrier Group Black
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
Builds Featuring This Part
See all 1 →Builds in the community that include the San Tan Tactical PILLAR Lite Billet Upper Receiver - STT-15 PILLAR LITE UPPER
| Build | Parts | Total |
|---|---|---|
 | 9 | $1755.65 |
No reviews yet. Be the first to review this product!