Wolff Precision Gun Springs engineered specifically for Smith & Wesson pistols. This 17LB Standard Recoil Spring package includes one firing pin spring and is precision-manufactured for optimal performance in .45ACP models 4566, 4567, 4576, 4586 and 10mm models 1066, 1076, 1086. Factory-standard tension ensures reliable cycling and consistent operation in these specific S&W firearms.
Part# 47917