Hello!  I'm Rio Benson, the author of the M1911A1 REDUX, an updated 3D CAD version of the latest known scans of the military ("ordnance") drawings of the John Browning/Colt/U.S. Army .45 caliber semi-auto pistol that began production more than 100 years ago.

This site is to provide the most legible, complete, and, hopefully, accurate source for publically available M1911A1 documentation, to my knowledge, as a free download.  Also available, but for a small donation, are the 3D CAD models and native SolidWorks 2012 drawing files in various CAD formats.  Contact me for their availability at:  rio@m1911a1redux.com
While a profit is not being made here; there are considerable costs involved in website, software, equipment, time, and maintenance in providing the files, a small donation for the model/native drawing files is necessary to continue making all this available. What's more, these files, including the REDUX, can only be provided with your complete understanding that I, Rio Benson (Rio Benson Consulting), do not in any way recommend these files be used to manufacture, maintain, repair, or modify any firearm; such use is the total and absolute responsibility of the user.  These files are intended only for historic and entertainment purposes, and their accuracy is not guaranteed.

Clicking on either of the illustrations to the right will download The M1911A1 REDUX, 2nd Edition
, multi-page PDF that contains all of the drawings, the illustrations, and now includes 3D PDFs (a.k.a., U3D) of all models.  If you didn't know, 3D PDFs allow the user to manipulate 3D CAD files in all six axes, using only a mouse and the required Adobe Reader, ver. X, or later.  Right clicking an opened 3D PDF file also provides a submenu allowing a number of other options for viewing the files without the need for CAD software.  This is a large file, about 57 Mb, so please give it adequate time to download.  You may have to change your browser PDF settings.

If you've requested the model/native drawing files, you may use them however you wish - except please don't share them, they are my Intellectual Property. If others want to obtain my files for themselves, you should send them to this site, or have them contact me directly at:  rio@m1911a1redux.com.  If you use my files in your own work, the law and literary etiquette says you should credit me in any document or application in which they are used.

The M1911A1 REDUX, 2nd Edition, is currently the only authentic source for documentation of its kind ... anywhere!

A last note:  A number of people, mostly engineering students, have contacted me expecting, for whatever reason, to be GIVEN the model and/or drawing files for free.  Anyone with access to and familiarity with a 3D CAD system can reproduce the models I've created using the already freely provided drawings in the downloadable PDF file, in which case they may actually learn something in the process.  I am definitely "Old School", and I am willing to give my work away only so long as it is my choice to do so; but I am seldom willing to do someone's work for them unless they are physically incapacitated.  In my 50 years' experience in engineering, no one ever did so for me, and I believe that is as it should be.  To borrow a quote from a 1949 Gary Cooper movie, "The Fountainhead", "A man who works for others without payment is a slave! I do not believe that slavery is noble. Not in any form, nor for any purpose, whatsoever!"  Think about it!

There are people who say there are dimensions missing from the REDUX or they have mis-intepreted them.  In this case, some 'Old School' wisdom must be applied and understood:
(1) - Dimensions which span a centerline are symmetrical about that centerline.  (2) - Centers for arcs that are tangent to a fixed (dimensioned) feature are
            located along an axis that is perpendicular to that feature.
(3) - The geometry on some component parts is very complex, particularly        
            small angles relative to other features or axes.  Make sure these
            relationships are correctly interpreted.

There are others who disagree with the use of shading in drawing views:  These are 'updated' drawings that take full advantage of the capabilities of 3D CAD. There is absolutely nothing in the drawing standards that prevent the more modern use of shading in them; shading helps in interpreting the views since it indicates curved surfaces, much like incrementally spaced lines used in patent drawings.  Enough said? 
Due to export regulations, the models and native drawing files are not available to foreign nationals.  See the disclosure notice below.

**** U.S. ARMS EXPORT CONTROL ACT & ITAR CONFIDENTIALITY NOTICE **** These documents may include technical data subject to the U.S. Arms Export Control Act (22 U.S.C. Sections 2751 and following) or the U.S. Export Administration Act of 1979 as amended (50 U.S.C. App. 2401 and following).  Technical data covered by these laws may not be exported or disclosed to non-U.S. persons without first obtaining an export license.  Violations may result in criminal, civil or administrative penalties. The information contained in this posting and any files transmitted with it may contain information that is subject to the International Traffic in Arms Regulation (ITAR) or the Export Administration Regulation (EAR). This information may not be exported, released or disclosed to foreign nationals inside or outside the United States without first complying with the export license requirements of the ITAR and/or the EAR.