Viridian RFX45 Low Mounting Adapter is designed for Universal firearm platforms. Finished in black anodized, this adapter base features an ACRO Footprint mounting method to interface with a Picatinny Rail system. Measuring 1.61 long, 1.81 wide, and 0.47 high, it weighs 1.23 oz for a low-profile optic installation. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.