I am researching and it seems to me that the HK pusher tool wont work with these sights? What part am I missing as to why it cant be used? I installed ameriglow sights just fine but I am guessing they arent as tall. On the other hand I am now wondering if on a USP Heinies would look to tall and awkward sticking that far up. I havent seen them in person but if the pusher cant clear them then I can only imagine they are quite tall.