I"ve been usingthe Foxfire TP(3 pin)about 2 months. I'm no expert on all the different sights but I love it. When Ireceived it I wasa bit shockedthat it was so small. The whole sight ringfits right inmy peep which seems to be the "New happening thing". No Allen wrench/hex is needed. The pin wheels (To move each pin up/down were a bit hard to move with my thumb at firstso I put a drop of oil on each one and it's perfect now. I showed the sight to a guy at the range and he ordered it the next day. One other thing...It was SO EASY to put on (I'm not very good at those things) and sighting it in was a piece of cake!