Lightweight Red Dot for Fast Target AcquisitionThe Nikko Stirling Red Dot is a compact optic built for fast paced shooting with a 30mm tube diameter and a 4 MOA dot for quick target acquisition. Its matte black non reflective finish low 4.3 oz weight and compact 4.3 inch length make it a practical choice for agile use. 30mm tube diameter 4 MOA dot size Only 4.3 oz in weight Compact 4.3 inch length Non reflective matte black finish