This rear view is compatible with Picatinny / Weaver rail systems. It features an A2-style dual aperture with the largest fast acquisition aperture for CQB operations and the smallest precision aperture for a high-precision target. This sight is adjustable in both height and wind, and is made of sturdy steel and aluminum. Improves image display and improves shooting accuracy, sturdy aluminum construction and steel with a matte black finish. Precise wind and elevation adjustment, complete with dual lens apertures and precision wind age. About us: Our motto is high quality, low prices, fast shipping, and caring for our customers. All products are electronically checked and tested prior to shipment to ensure the highest quality. 100% customer satisfaction is our ultimate goal, so we encourage you to send us a message because we will work for you. It is very useful to say that it is essential that each company guarantees better quality products to its paying customers.