the KSG follower tool work flawlessly and i highly recommend it when changing out the plastic follower. The main drawback only comes in when you install something like Gearhead Works Beast. Then you run into clearance issues which makes the tool kind of 50% less useful. if the flat end of tool were milled back to a smaller socket size, while still keeping the pass-through hole intact, it would be perfect in all conditions. .. it was annoying after I couldn't use tool to tighten follower nut (wish i could take off just 1/2 star)