The material is a reflector gunsight glass, conforming to MIL-R-6771 Type 1. It has a lusterless black color, identified as No.37038 in accordance with FED-STD-595. The item is of the upper type and features beveled edges with fine gray ground. Its reflective coating is non-polarized, with a reflectance of 24% and a PORM of 3%. Additionally, it has an anti-reflective coating of high efficiency Type MGFL as per MIL-C-675. This coating provides a maximum average reflectance of 0.9%, with a maximum absolute value of 1.4%, across a wavelength range of 400-700 nanometers. The angle of incidence for the PORM is 10% at 51 degrees. The overall dimensions are 16.520 inches in length, 8.750 inches in width, and 0.230 inches in thickness.