The 
VORSK Outer Barrel Extension VMP-2 Series 16" Red is a full metal, 406mm-long (16 inch) airsoft accessory designed to customize the appearance and length of your VORSK VMP-2 gas blowback rifle. It features a 14mm CCW male thread for compatibility with various muzzle devices. 
Product Details and Features
Length: The extension measures 16 inches, which is approximately 406mm.
Material: It is constructed from a high-quality aluminum alloy.
Color: The extension comes in a red finish. Other color variants like black, silver, and blue are also available.
Threading: It has a 14mm CCW (counter-clockwise) male thread, making it compatible with a wide range of suppressors, tracer units, and other accessories.
Compatibility: The extension is specifically designed to fit the VORSK VMP-2 GBB rifle and seamlessly attach to the VAC-06-09 outer barrel mount base.
Function: It allows users to adjust the outer barrel length to match different handguard configurations and enhance the aesthetics or performance of their airsoft replica.