The San Tan Tactical STT-15 Pillar Receiver Set is engineered for serious firearm enthusiasts looking to build a reliable and high-performance AR platform. This lower receiver set combines durable construction with innovative features, including an ambidextrous magazine release and an integrally machined magazine well flare that enhances loading efficiency. The oversized winter trigger guard ensures ease of use in various conditions, making it suitable for tactical and competitive shooting applications. Crafted from high-quality American materials, this receiver set promises exceptional reliability and precision for your custom builds. Intended Use: Perfect for custom AR builds and tactical applications. Key Benefits: Designed for enhanced performance and user convenience. Key Features: - Ambidextrous magazine release - Integrally machined magazine well flare - Oversized winter trigger guard - Billet upper/lower construction Summary: Whether you're a competitive shooter or building a custom AR for tactical use, the San Tan Tactical STT-15 Pillar Receiver Set provides the quality and reliability needed for superior performance in the field.