The Russian soldiers also Bubba'd their SVT's in the field for close quarters urban warfare. Soviet WW-II arms were used very hard and look toasty as a result. Most SVT's were grooved for the scope mounts though few were so equipped. These rifles also have fluted chambers !!!! I didn't know that until it was mentioned to me then I checked my SVT-40 shortie with a flashlight. Sure enough !!!!
A shorter carbine version (sometimes called SKT-40) was designed in 1940 and was reportedly produced in small numbers; but again, this is somewhat disputed. As a field modification, standard SVT's were sometimes modified into a carbine configuration, with varying degrees of success and work quality. A prototype version chambered for the new, shorter 7.62x39mm round was developed, but was not accepted for production.