to complete the frame.
our 80 percent 1911 frames are made from 7075, heat-treated aluminum making them a really lightweight option for builders. aluminum 1911 frames are 60% lighter than steel frames and much, much easier to complete. they will save you a lot of time and frustration.
an 80 percent 1911 frame is completed with the assistance of a 1911 jig. the 1911 jig is built around the frame and has cut-outs to guide the builder with the holes required to drill and complete the 80% frame. 