Fastfire II red dot sight enables you to aim at the target accurately and speedily with its aiming red dot technology. You can use this Burris 1.07x rifle sight in any climatic conditions as it is a fully waterproof unit with mount and cover. Weighing just about 1.6 ounces. A lot of newer modular Pistol Optic Mounting Systems are compatible with the Burris Fastfire. Pistol plates and 1913 Picatinny rail Mounts