– Barrel length: 206mm
– Overall lenght with extented stock: 735mm
– Overall lenght with folded stock: 490mm
– Weight: 2.7kg
Soviet planners drew from the unsolicited design AO-46 built in 1969 by Peter Andreevich Tkachev, which weighed only 1.9 kg. The TTT specifications required a weight no greater than 2.2 kg (4.9 lb), a length of 75 cm (29.5 in)/45 cm (17.7 in) with the stock unfolded/folded, and an effective firing range of 500 m. The competition was joined by designs of M.T. Kalashnikov. Kalashnikov also presented an additional design (A1-75) which differed from PP1 by having a modified muzzle for flash and noise suppression.
In 1977, the GRAU decided to adopt Kalashnikov’s model, which was largely a shortened AKS-74, because its performance was no worse than the competition, and promised significant production cost savings by utilizing existing equipment for the AK-74 line. A final round of large scale testing with Kalashnikov’s model was performed by airborne divisions in the Transcaucasian Military District in March 1977. The AKS-74U was officially adopted in 1979, and given the official, but seldom used GRAU designation 6P26. In 1993 production stopped.