Build a reliable AR-15 with the Andro Corp ACI-15 Partial Complete M4 Lower Receiver, a precision-engineered foundation designed for serious shooters and custom builds. This partial assembly delivers the core components you need to start your project while allowing flexibility to add your preferred stock and upper receiver. Key Features Forged from high-strength 7075 aluminum alloy for exceptional durability and lightweight performance in demanding tactical applications Includes mil-spec lower parts kit with trigger guard for immediate assembly readiness A2-style pistol grip provides a comfortable, ergonomic hold during extended use M4 buffer tube assembly included for compatibility with standard stocks and buffer systems 90-degree, 2-position fire control markings ensure clear, compliant operation Text-embellished magwell for easy identification and professional aesthetics Multi-caliber design accepts all standard AR-15 uppers and components Specifications Platform: AR-15 Material: 7075 Aluminum Alloy Color: Black Handedness: Right Ambi Controls: No Stock: Not Included Fire Control Marks: 90 Degree 2 Position Magwell Embellishment: Text Weight: 32 oz Dimensions: 16" L x 9" W x 2.5" H Benefits for Your Build This partial complete lower solves common pain points for builders by providing a pre-assembled lower receiver with essential internals, reducing assembly time and ensuring consistent quality. The forged construction resists wear and maintains tight tolerances for reliable function across thousands of rounds. Right-handed configuration with non-ambi controls keeps the design streamlined and cost-effective without sacrificing performance. Whether you're assembling a home defense rifle, competition setup, or tactical platform, the ACI-15 delivers a solid starting point that pairs seamlessly with aftermarket parts. Why Choose the ACI-15 Partial Complete M4 Lower Receiver Crafted in America with attention to mil-spec standards, this receiver offers the perfect balance of readiness and customization. Its partial configuration lets you select the exact stock and buffer weight that matches your shooting style, while the included grip and parts kit eliminate the need for sourcing individual components. Ideal for enthusiasts who value quality components and efficient builds, this lower receiver supports a wide range of AR-15 configurations while meeting the demands of professional and recreational use alike.