Colt M45A1/1911 Government 5" .45ACP Dual Inner/Outer Recoil Spring Assembly Factory Colt dual recoil springs for M45A1 and 1911 Government 5" .45 ACP pistols. 7 lbs inner spring (SP300264) and 11.5 lb outer spring (SP300263). Text 956.467.2939 Meet in McAllen