The Anderson Partial Lower Assy. Am-9 Open 9Mm Standard is a versatile and reliable component for building your custom firearm. Designed for use with 9MM ammunition, this partial lower assembly features a Type 3 hard anodized finish on the receiver, providing durability and corrosion resistance. The lower receiver itself is crafted from forged 7075 T6 aluminum, ensuring exceptional strength and stability. With its open trigger guard design, this assembly offers a clean and unobstructed shooting experience. Fast shipping ensures you can get started with your project quickly. The Anderson Partial Lower Assy. Am-9 Open 9Mm Standard is manufactured in the United States, adhering to strict quality control standards. Key Benefits and Features: Caliber: 9MM Receiver Finish: Type 3 Hard Anodized, Black Lower Receiver Material: Forged 7075 T6 Aluminum Trigger Guard: Open Trigger Weight: 5 Country of Manufacture: United States