If it is the 7 in. slide from the .45 AMT longslide, if you have a 7 in. barrel it should all go together .There might be some fitting necessary, but probably no more than fitting any other parts together. THE EXTRACTOR on my AMT GOVERNMENT MODEL slide is a little different than the Colt style extractor but the Colt style extractor will fit and work, with some fitting like all extractors..