Description Recoil Spring 9mm Factory replacement for all Kimber Pro Carry series and compact 4″ 9mm guns. Fits 9mm only 4 Inch Pistols Factory recoil springs for .45 ACP are Colt Officers full-diameter 22 pounds (use Stock No. 490xx) Factory recoil spring for 9mm are 14 Lbs Kimber Compact hammer springs are the same as Colt Officers with the factory spring rated at 23 pounds Kimber Pro Carry hammer springs are the same as Colt Gov’t with the factory spring rated at 23 pounds Magazine springs are the same as Colt. All other misc springs are the same as the Colt Government
