The 
VORSK Outer Barrel Extension for the VMP-2 Series - 16" in blue is an airsoft accessory used for customization  is designed to extend the barrel length of the VORSK VMP-2 GBB airsoft rifle
 
Key Details & Features
Compatibility: This extension is designed specifically for the VORSK VMP-2 GBB airsoft series. It fits perfectly with the VAC-06-09 outer barrel mount base.
Threading: It features a 14mm CCW (counterclockwise) male thread, which makes it compatible with a wide range of aftermarket airsoft accessories like suppressors and tracer units.
Length: The extension provides a 16" (approximately 406mm) increase in outer barrel length.
Material/Color: The product is available in a blue finish, as well as black, silver, and red options.
Purpose: It allows users to adjust the external length of their VMP-2 to match various handguard configurations, enhancing both the look and potential performance/inner barrel options.