well seeing as how you are only wanting to spend a 100 bucks id say take a look at the Spot Hogg Right On. these are rock solid sights. i dont think there is a sight on the market that can compare to them in quality and durability. they are easy to adjust and they stay put once you adjust it. they come with .019 pins on a 5 pin housing. each pin is micro adjustable for windage and elevation. they are plenty bright also.

www.spot-hogg.com