Originally Posted by sna0403
Standard recoil spring weight on a 1911 is supposed to be 16#. I run a 17.5# in my 5"ATI, because I didn't have a lot of faith in my stock spring and it just works better for me with full factory loads. Contact Ruger to find out the exact weight and then go to Wolff Spring for your replacement based on what you're shooting. They have a lot of good info on their website. Good luck and stay safe.
Mine feels more then 16lb. Compared to my Glock 19 spring (which should be 18lb) its heavier.