The STI International 2011 standard frame kit is a modular system that has revolutionized the pistol industry.
Utilizing an all steel frame and a polymer grip, the 2011 frame kits are 35% lighter than their 1911 counterparts. Built to exacting tolerances never seen before, these frames are CNC milled billet steel, then heat treated to 30 Rockwell hardness; creating a very accurate frame on which to build the highest quality pistols. All frame kits include, frame, grip, mag catch, trigger and mainspring housing. The frame can be cut for a ramp barrel (Wilson/ Nowlin cut).
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