I think they are the best made sight on the market. The "right on" sells for about 80.00 bucks. Right in line with the plastic TR sights " so I don"t think they are that pricey considering.
ΒΌ-20 bolts for all adjustment " can you say tank
My only real complaint is with the individual pin adjustments. A little tricky at first " a real non-issue though. The pins are not the brightest pins out there " they hold light well after its to dark to shoot " but they are not blinding.
I love the sight and the way it is built " it is a quality piece of Alum.