Best bang for your buck - Hi-Lux Optics Tac-Dot 21x16mm Tactical 4MOA Dot Red Dot Sights w/Integral Mount

This reflex sight is awesome! Optics planet had a rebate on it and so I took a chance and bought it. I am so glad that I did! I put this on my marlin 30-30 to use as a brunch gun up in the Pacific Northwest where the brush is so thick that sometimes you only get a split second to take a shot at a deer. Sighting in with this reflex sight is a bit tricky because the adjustments have no positive clicks or notches. You have to turn the windage and elevation turrets very slightly until you get dialed in. After a bit of tinkering with it and going through a box of ammo, I got it dialed in and now I'm shooting between 2-3 inches at 100 yards with my 30-30 and it holds zero with no problem. All in all, I love this sight, I just wish these companies would put positive click adjustments for the turrets to make life easier when sighting in. I would definitely buy this sight again!