Colt 1911 Gov’t/Comm., 15lb mainspring. $13.97 ET111161 Eemann Tech Main Spring for Colt 1911, STI 2011 and clones. 15LB. In stock Colt 1911 Gov't/Comm., 15lb mainspring. quantity Add to cart Category: Colt 1911 Related products Fusion 1911 Milspec Hammer, Govt, Bl $65.00 Colt Government 1911 Variable Recoil Spring 13lb $16.97