The 
VORSK Outer Barrel Extension VMP-2 Series 11.5" Purple is an airsoft accessory available for purchase from several online retailers. It is designed to customize the appearance of your VORSK VMP-2 Gas Blowback airsoft rifle. 
 
Product Details
This outer barrel extension is constructed from high-grade aluminum alloy, providing durability while remaining lightweight. It has a length of 11.5 inches (approximately 292mm). It is designed specifically for the VORSK VMP-2 and is compatible with the VAC-06-09 outer barrel mount base. The extension features a 14mm CCW (counterclockwise) male thread, allowing for compatibility with various barrel accessories like suppressors and tracers. It is intended for aesthetic customization of your airsoft rifle.