I've wanted to do this for a long time and finally did, I got a Timney Trigger Fix for my 870 slug gun. You don't replace the entire trigger, you get a new sear, three sear springs in hard, medium, and light, and a small allen wrench for adjusting the pull from 2 to 4 lbs. It took me about 20 minutes to install the new stuff, I used the medium spring and put the adjustment in the middle to start. After pulling the trigger a half dozen times I left it at those settings. What a difference, I couldn't believe it. I went and fired 5 rounds at my buddy's farm real quick just to try it, unreal. You can't believe how stiff and rough a factory shotgun trigger is until you try something like this. Anyone interested, it's called Timney Trigger Fix, it fits Remington 870, 1100, and 11-87. Best price I found was $78 & free shipping from an outfit called "milspecdepot.com".