While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
The earliest production PU sniper variant were produced at Iszevsk and Tula in the second half of 1942, exact date I've never seen sources agree on or even often specify. Alexander Yuschenko had access to primary records and I don't recall seeing even any general date outside of the year in his book on the 91/30.
Mine's a 1943, hardly early since they can date back to 1940.