Hi- I just purchased a 686 plus combat magnum. I took it to the indoor range and had a real difficult time seeing the front red sight. I prefer not to change out the front sight unless I have to and would first like to try and paint it a bright yellow if possible. The red insert of the front sight I believe is plastic. Can the insert be painted? I know testors and brite-mark make a paint pen that would probably make application easier. Also, I prefer to use a paint that could be removed if I did not like how it came out. I am just not sure that paint will stick to the red plastic sight.
Thanks for any help.

First try a yellow fingernail polish. Easy to remove.
Also you might try sunglasses to see if they clear up your sight picture.
The red ramp works great for me.

I wear amber glasses when I shoot, indoor or outdoor, they really brighten the front sight regardless of color. Also, does your range have sufficient light at the shooting positions? Anyway, I think you should try amber glasses before painting anything.

I dab a bit of white out on the red ramp. Works great, no glare and shows up very well. Easily removable and lasts quite a while between touch ups.
Jim

Yes , you can paint the front sight. Use some Liquid Paper or White-Out as a base coat. It dries to a flat white so your color coat appears brighter . My last front sight got applied with a White-Out Pen , just shake and squeeze the "pen" puts it right where needed.
Be sure to degrease and clean metal/plastic on front sight.
Gary

When I was "painting" my front sights I did not use paint. I used Liquid Paper correction fluid. It applied easily and was inexpensive to touch up. I could also see the sight better during low light situations. The only problem I had was seeing the sights against a white background but that rarely happened.

You can paint it with Testors paint , it probably wont last long but it will give you an idea if you like the new color or not. If you are handy You can remove the plastic red insert and make a mold around the sight. Mix Testors paint of your choosing and 5 minute Epoxy. fill the cavity left by the plastic insert and when it hardens file/ sand it to match the original . insert. My 686 did not had a red insert, I file a cavity in the front sight and fill the cavity with red epoxy.

Thanks for all the advice/opinions. The lighting inside at the range by me isn't great, but I have also just tried to focus on like the tv screen in my house and it still isn't too clear. Not sure if the fact I am red/green/blue color blind that makes it more difficult for me to see targets off of the red sight or not, but it's not working for me. I will try some white-out or testors bright yellow.