The New Warrior Ion feed neck is a great addition for any Ion marker. The feed neck is easily installed on any Ion marker by removing the stock feed neck. The Warrior feed neck screws into place and securely holds any hopper from a small neck Revolution to a large neck Halo. The adjustable clamping arm locks the hopper into place and will prevent it from falling out or rotating. This is a must have for any player who wants to have the best gear and the least trouble on the field.