A little Information on the SCUD-C
In the late 1980s, a program to modify the design of the original SCUD B missile began. The new design, or SCUD-Cs reported to have been completed in June of 1990.
The new design had increased range by adding 25%more fuel and oxidizer, Tonka-25050% Triethylamine50% Xylidine/T-1 Kerosene Oxidizer AK-20P (IRFNA)27% N2O473% HNO3 Different Inhibitor: and a lighter warhead estimated from 750-989kgs.
New guidance equipment was also added to the upper area of the missile resulting in a new compartment for housing. The end result lengthened the original B: model. Though public reports show estimations of the actual length to be from 11.37M to 12.29M, CAD drawings by Vladimir Minakov show the Russian-C version as being about 11.7M; which splits the difference in estimates.
Among the nations known to be in possession of the new Scud-C model is North Korea, which also has its own manufacturing facilities. Their version is known as the HWASONG-6.
Syria is also thought to possess the C model as of 1991, and in 1990 Iran is known to have arranged for delivery of the C model, as well as set up equipment from North Korea.
Eric's Flying Scale of the Russian SSC-1D Scud C Can Be Download Here: