For the front sight: XS Sights "white line patridge" front blade (not partridge). This has a thin white line that your eye pics up well and you aim off of the top of the blade so your aiming point is not covered. A lot of guys use fiber optics but in various lighting conditions they can be hard to sight with, and at 100 yards they cover a lot of the target.
For the rear sight:
XS Ghost ring sight: Very simple clean install. Not a lot of extra hardware on your rifle.
Williams FP peep: Much more adjustability than the XS Ghost ring. You can also order various aperture sizes depending on what you like better, or completely remove the aperture and use it like a ghost ring.
Here is the link for Williams:
Here is the link for XS Sights: