AS Val and VSS Vintorez
The AS Val "Shaft" and VSS Vintorez "Thread Cutter", 6P30 and 6P29 respectively, are Soviet-designed assault rifles featuring an integral suppressor based on the prototype RG-036 completed in 1981 by TsNIITochMash. The two rifles hereafter are referred to as the Vintorez and Val. The Vintorez and Val were developed by TsNIITochMash to replace modified general-purpose firearms, such as the AKS-74UB, BS-1, APB, and PB, for clandestine operations, much like the PSS Vul. Manufacturing began at the Tula Arms Plant after its adoption by the Armed Forces of the Soviet Union in 1987.
Source: Wikipedia
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