Colt 1911 Gov’t/Comm., 16lb mainspring. $13.97 ET111162 Eemann Tech Main Spring for Colt 1911, STI 2011 and clones. 16LB. In stock Colt 1911 Gov't/Comm., 16lb mainspring. quantity Add to cart Category: Colt 1911 Related products Colt Government 1911 Variable Recoil Spring 14lb. $16.97 Fusion 1911 Commander Hammer, Stainless $75.00