16 lbs. Recoil Spring standard power High quality brand-spring in the default value for .45 ACP! Defaults: 1911 Government .45 ACP = 16 lbs., In .38 Super and 9 Para = 14 lbs. and .40 S & W = 19 lbs. 1911 Officer standard .45 ACP = 22 lbs. 1911 Commander standard .45 ACP = 18 lbs.
