10 mm recoil spring [Archive] - Glock Talk Glock Talk > The Armory > Gunsmithing > 10 mm recoil spring PDA View Full Version : 10 mm recoil spring dpadams602-04-2010, 21:47i recently got a wolff 22 lb. recoil spring and guide rod for my glock 20sf...wolff also sent me a firing pin spring included...do i also need to replace the recoil spring too.? DannyR02-05-2010, 05:12You do not have to change your firing pin spring. Wolff includes one with each recoil spring order. I guess if you can't sell them you might as well give them away.:cool: vBulletin® v3.8.7, Copyright ©2000-2014, vBulletin Solutions, Inc.