The San Tan Tactical Santan Pillar Lt Upper Receiver is a lightweight billet upper designed for shooters who want a rigid, reliable foundation for their AR-15 build. Cut from a single piece of 7075-T651 aerospace grade aluminum, it features integrated truss pockets that enhance structural rigidity while keeping weight to a minimum. The receiver includes a shell deflector, machined T-markings along the top rail for easy optic relocation, and precise M4 feed ramps, all built to true mil-spec standards.

This upper interfaces seamlessly with AR-15, M4, and M16 platforms and accepts all known handguards without modification, making it a versatile choice for custom builds, training rifles, and dedicated range guns. Its Type III Class II hard coat anodized black finish provides durable protection for long-term use, and it is compatible with popular battery assist levers. Whether you are assembling a new rifle or upgrading an existing one, the Santan Pillar Lt Upper Receiver reflects San Tan Tactical’s focus on precision machining and thoughtful design.

• Manufacturer: San Tan Tactical
• Model: Pillar Lite Billet Upper Receiver
• Gun Make: AR Platform
• Gun Model: AR-15, M4, M16
• Receiver: 7075-T651 Aerospace Grade Aluminum
• Finish: Mil Spec Type III Class II Hard Coat Anodized Black
• Additional Features: Shell Deflector, Machined T Markings, M4 Feed Ramps, Accepts All Known Handguards, Compatible With Battery Assist Levers