I've got the factory Red Dot that came with the 301 and I have had no problems with it. It hasn't come loose (blue loctite on mount screws and it holds point of aim. It is definitely more "old school," is bigger than most newer red dot sights, but as long as it works, it is hard for me to want to drop $100-$250 on a new sight. If I ever decide to shoot TSS in my 20 gauge. I might consider it, especially if I had available shots at 50 yards. I currently shoot straight bead on my 20 gauge gun, but beyond 40 yards an optical sight of some type would be needed, particularly with my aging eyes.
