This is a US Optics Rifle Scope known as the TS Series, model TS-20X MDMOA.
U.S. Optics has been a U.S. manufacturer of custom riflescopes and optics for 28 years. In this span of time the functionality" durability and clarity of their optics have evolved through research and development efforts" invaluable end user feedback" design innovation and proven engineering principles.
Features:
First Focal Plane
Variable power
Parallax Adjustment