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 Firing Pin Stop $25.00 Barrel link, #2 (Std -) $19.97