How Does AKS-74U 3D Animation Zoom in/out

This was no doubt inspired by observing the US experience in Vietnam with the XM177. The Soviet planners also 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 (547 yd). The competition was joined by designs of M.T. Kalashnikov (PP1), I.Y. Stechkin (TKB-0116), S.G. Simonov (AG-043), A.S. Konstantinov (AEK-958), and Yevgeny Dragunov (who called his model "MA"). Kalashnikov also presented an additional design (A1-75) which differed from PP1 by having a modified muzzle for flash and noise suppressio
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