check out a Meprolight Tritum bead or a hi-viz fiber optic sight that snaps onto your barrel. my next bead sight equipped gun will have one of those on it. the gold bead can be pretty lame in low light. i believe in just enough of the bead visible to assist with instinctive pointing. both those options are pretty cheap too (under 35 dollars). i do like the Ghost Rings though if you plan on shooting slugs alot.
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