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 Fusion 1911 2pc Full Length Guide Rod, Commander, Stainless $65.00 Colt 1911 Front White Dot Sight, Series 70 $40.00