Can-down: That's a good suggestion on the Remington sights... I don't mean to rag on anyone's gun, as it's all personal preference and sometimes you need to make do, but I think the rear sight is either a bit short, or a bit long, depending on how you look at it. I think if it went all the way to the front of the receiver, or was right at the sloped part of the rear, it would suit it a little better.
I do have a quick question about ghost rings though... I've never had them on anything, although I know the basic premise. However, I've noticed that my barrel doesn't always sit in the same spot when I remove and reattach it. That is, when aiming down sights, the barrel appears rotated a couple degrees left or right, so the rib doesn't perfectly line up with the pattern on the receiver. I don't think it'd cause any issues in the case of using just the bead/rib, or a receiver mounted sight, but I'm wondering if that little bit of variation would throw my aim off with ghost rings. I know it's not a "precision" firearm, and I don't mind an inch or two of variation at fifty feet, but I don't want it to be a crap-shoot everytime I reattach the barrel, and I don't want to have to adjust the windage to compensate all the time.