Some Mk.II STEN guns were manufactured with integral silencers for undercover operations and were marked as Mk.II(S). These guns had shortened barrels enclosed into integral silencer. The silencer was rather effective so most audible sound when firing Mk.IIS was the clattering of the bolt moving back and forth in the receiver.

1)TYPE: sten MK.II SILENCED
2) Built Material: Full Steel
3) Gear Box: Version 7
4) Shooting Mode: Auto
5) Magazine: 50 Rounds
6) Barrel Length: 205mm
7) Weight: 2630g ( AEG with Magazine )
8) Charger: Li-ion polymer Balance Charger ( Included/100-240V )
9) Muzzle Velocity: 290-310FPS ( with 0.2g BBs )