The Singlepoint was tested by the US Army at Frankford Arsenal as part of the sight enhancement project. The project tested 66 different sights between 1967 and 1975. The project would culminate in the development of the RCS (Reflex Collimator Sight) by Frankford Arsenal and AAI Corporation. The RCS would fail to be adopted after testing in 1975 (Blake Stevens & Ezell, 2004).
Pending more.
Images
With British soldiers in North Ireland.
Image from US Army testing during the Frankford Arsenal sight enhancement project.
With US soldiers prior to the Son Tay raid.
With US soldier in Vietnam.
With Rhodesian soldier on FN FAL.
On FAL in Africa (captioned as taken in Liberia or Sierra Leone).
Review from September 1970 issue of Popular Mechanics.
Review from February 1971 issue of Popular Science.