O'Malley's weapon aiming system
Offset accessory mount
Offset attachment for use with a firearm scope
Operating element for a telescopic sight
Optical imaging device for firearm scope attachment
Optical sight
Optical sight apparatus for firing from cover positions
Optical sight having a glow-in-the-dark aim indicator
Optical sight system with wide range of shooting distances
Optical sight with switchable reticle
Optical sighting devices
Over barrel gas tube optical sight mount