This feedneck delivers exactly what it promises. On top of my apache using orings to properly seat iself, this just adds a good amount of holding power. It tightens onto the hopper neck just like it should, and sits low. It wont give you any problems. It's especially worth it for bushmasters, which have a high stock neck. It's easy to use, and looks good on nearly any ICD gun.
Great neck. A deffinite improvement over stock, and is inexpensive.