I am currently looking for CAD drawings, solid models, and prints.  I am trying to build a reference library of all types and components of any weapons system.  I would most definitely prefer MIL Spec prints.  Any help in providing or pointing me in the right direction would be greatly appreciated.  

1911 Government Model, AR-15, HK, etc.
bolts, slides, frames, receivers, firing pins, etc.
forgings, casting, sheet metal, specs