Colt 1911 Gov’t/Comm., 17lb mainspring. $13.97 ET111163 Eemann Tech Main Spring for Colt 1911, STI 2011 and clones. 17LB. In stock Colt 1911 Gov't/Comm., 17lb mainspring. quantity Add to cart Category: Colt 1911 Related products Colt Government 1911 Variable Recoil Spring 13lb $16.97 Colt Government 1911 Variable Recoil Spring 9lb $16.97