For special operations based on the MP-5, a special version of the MP-5SD was created, which has a non-removable integrated silencer. This option involves the use of standard 9mm caliber cartridges with a supersonic bullet, so 30 small holes are made in the barrel, through which part of the powder gases is discharged into the rear silencer expansion chamber. The HK MP5SD submachine gun is a less noisy modification of its predecessor.
- Added custom shot sound. - Model adapted to "Normal Map Plugin" from DK22Pac.
Addition: - In the folder of the same name there is a respirator model, which by default replaces the carrier's cap.