Colt 1911 Gov’t/Comm., 16lb mainspring. $13.97 ET111162 Eemann Tech Main Spring for Colt 1911, STI 2011 and clones. 16LB. Out of stock Category: Colt 1911 Related products Colt Government 1911 Variable Recoil Spring 20lb. $16.97 Colt 1911 Front White Dot Sight, Series 70 $40.00