From 5KU we have the PSB-1 Supressor.
The PSB-1
The Essential Russian Suppressor for your AK. Known and Loved in every media, if you are looking for a Suppressor for your AK, this is the one. Simple and Robust with its metal construction and foam filled internals, they can be effective but also have room for modification.
Sizing and Threads
Length: 202mm
Diameter: 40mm
Threads: 24mm CW threading with a 14mm CCW removeable adapter.
Compatibility
Suitable for any Replica AK that features either a 24mm CW Threaded Muzzle or a 14mm CCW Threaded Muzzle.