Here is a different looking Bullpup the TKB-022, it never came to be but is pretty wild, especially for the 60s.
Looking like something out of an old Flash Gordon movie, the TKB-022 was an experimental Soviet assault rifle back in the 1960s. It fired a 7.62 mm round and its housing was a hard plastic, unusual for the times.
The Soviet military tested various versions of this rifle for several years, but eventually passed on the design. Why? Who knows? Perhaps the weapon was just too unusual looking for the Soviet brass. Or maybe it was because the traditional Soviet weapon of choice, the AK-47, was just too good a weapon to let drop. The answer probably lies in some secret Russian files somewhere