It is interesting to note that at this time, in 1949, several modifications to the Mosin PU sniper rifle were also sent to trials, the 'MS' model, made by factory #74 (Izhevsk) and SV-2 and SV-3 models, made by OKB-180. The very first SKS Sniper rifles were made in Russia for trials in 1949, they used a mount very similar to the ms74 mount that was also tried on Mosin Nagant sniper rifles around the same time, also in 1949
