SMK Optics Telescopic Sights and Mounts, Manufactured in the same group of factories that produces the superb visual aids and sights used by the Chinese army, each sight in this range represents quite remarkable value for money. Fitted with lenses ground to the highest possible specification, these sights have light gathering properties which are the envy of manufacturers throughout the world. Please note that these scope require Weaver mounts (spweaver) to fit Airsoft guns.