"NIGHTFORCE STND FOR TIKKA T3 1913 MIL-STD 20 MOA BASE The Nightforce standard duty base is a quality, affordable solution for ensuring that your scope is firmly mounted to your gun. The aluminum base is machined to Mil. Std. 1913 rail specifications and hard anodized. ABOUT NIGHTFORCE Nightforce was born in 1992 with the vision that everything that is built will meet the promise to be rugged, reliable and repeatable. They design and build optics and mounting systems that have been tested in the harshest conditions on earth. There is no such thing as "mass production" at Nightforce. Only a skilled human eye and experienced hands are sensitive enough to perform many of the critical operations involved in assembling a precision optical instrument. "