Double Barrell V3 ModDon't forget to add two batteries. HERE Product Details Squid Industries Double Barrel V3 is a 150W variable wattage mod which is stylish and sleek. The mod has been upgraded and has now been perfected. They have upgraded every possible short coming in previous versions to ensure the new Double Barrel V3 will provide the best vape possible. Squid Industries have upgraded the 510, flush mounted the screen and sealed the entire top portion of the mod.