The Hush XL is a mock suppressor designed specifically for the ASG SSG 69 P2 and AW .308 airsoft sniper rifles, but it also fully compatible with any AEG or GBB rifle with a 14mm CCW barrel threading. It even comes with an adapter to fit barrels with a 23mm CW threading. This barrel extension has a matte black finish with authentic silver trademarks and a tight internal BB guide tube. Features: Type: airsoft rifle barrel extension, Material: metal alloy, polymer, Dimensions: 40 mm (1.6 in) x 40 mm (1.6 in) x 247 mm (9.7 in) , Compatibility: 14mm CCW outer barrel or 23mm CW outer barrel