3-In-1 Tuning Choices
One kit so you can precisely tune the autos listed for smoothest double and/or single actions' pull and proper functioning.KIT #26520 COLT 1911 & COMMANDER - Contains 1 each 19 lb., 20 lb. and 21 lb. hammer springs. Factory spring is 23 lbs.
1911, Issue:11, Page:032
Big Book Catalog, Issue:70, Page:124
Sinclair, Issue:1A, Page:030