GB-Tech/Vega Force Company (VFC) have silently released their M4 QD Suppressor... "M4 QD  Suppressor is specially designed for US SOCOM SOPMOD M4 by KAC with quick attach and detach function. There are two versions. The old version retainer was located in right hand side, the new one  is changed to  left hand side for earlier attach /detach.  Also the laser carving on the silencer changed to double lines. Not only US Special Force, but also Germany special force KSK is using M4QD Silencer.

VFC M4 QD Suppressor Characteristic:

• Dimension, function and operation are all simulate with the  real suppressor.  
• Each silencer has unique serial leaser number carving.
• High-level air-flight aluminum material, weight only 155g.
• Surface sanded and high hardness anodized.
• For Marui, CA, SRC M4 and SR16 Flash hider."