I had one of the springs but no longer have the contact info. If you want a really good rifle like trigger Timney triggers sells an 870 Sear/Spring set with a new sear and 3 different wt. springs. Changing just the Spring works ok but a new sear and spring makes a rifle like trigger on your 870. I got mine for about 80$ on eBay with free shipping. There easy to install Timney has a video on there site 5 min job tops.