Posted by Drew Hause on March 26, 2026, 7:13 am, in reply to "Re: Improved Field Grade"
The raised "Single Sighting Plane (SSP) Rib" was introduced in 1939 at an additional cost of $5.
In 1940 it was standard (no extra charge) on FW frame guns, and in 1941 on Regular frame guns.
1940 brochure
113
Responses