Andro Corp ACI-15 Complete Lower Features The Andro Corp Industries ACI-15 is machined from aluminum and finished in a durable black anodized coating that resists wear and corrosion through repeated use. Its multi caliber design allows builders to configure the lower for a variety of AR-15 chamberings which makes it a versatile starting point for a dedicated build. Measuring 10.5 inches the lower is sized to integrate cleanly with standard AR-15 components and build kits. The black anodized finish also provides a consistent low glare appearance that matches most AR-15 upper receivers and furniture. At 11.2 ounces the ACI-15 lower keeps added weight to a minimum which benefits shooters assembling lightweight rifles or pistol configurations. The aluminum construction provides the strength needed to handle repeated firing cycles while keeping the receiver easy to machine and finish to spec. Builders can pair this lower with their choice of AR-15 upper caliber conversion and furniture to create a rifle tailored to their intended use. The ACI-15 gives custom rifle builders a solid adaptable foundation for a wide range of AR-15 projects. Andro Corp ACI-15 Complete Lower Specifications Manufacturer: Andro Corp Model: ACI-15 Caliber: Multi-Cal Firearm Type: AR-15 Length: 10.5 Receiver Material: Aluminum Receiver Finish: Black Anodized Weight: 11.2 oz Available At: GrabAGun