Officers ACP Blueprints

[Hawkmoon]

Probably most of the Colt aficionados on M1911.org know that there are available on the Internet copies of the U.S. Ordnance Department "blueprints" (they are actually blackline prints on white paper, but everyone refers to them as "blueprints") for the M1911A1 pistol. Over the years, some people have wondered just what's different between the M1911A1 and the Officers ACP pistol. Sure it has a shorter barrel and a shorter handle on the receiver, but what else is different?

Harwood Loomis, John's co-editor for and frequent contributor to the M1911.org on-line magazine has just completed a task that took him roughly a decade -- he has generated a fresh set of "blueprints" in the same format as the Ordnance Department prints, but reverse engineered to reflect all the parts that make up the Officers ACP pistol. Having completed the task, he is now trying to see if anyone cares. If any of our members would be interested, please post here. And, if you are interested, please tell us what format you would prefer. At the moment everything is in PDF format, formatted to print on 11x17 (ledger, or tabloid) paper.

Please let us know if there's any interest.

[Doran]

I would enjoy seeing those.

[Hawkmoon]

Update:

The complete book of Officers AC blueprints has been uploaded to The Internet Archive, under a Creative Commons license. This means that anyone is allowed to download the file, copy it, and even redistribute it for private use, but commercial use is prohibited.

Link: https://archive.org/details/aa-book-compiled_202511

We have received comments that the reproduction quality when viewing some of the drawings is poor. This seems to be a problem with The Internet Archive, not with the files. If you download the PDF, the resulting images should be of uniformly acceptable quality.

This collection may be of interest to fans of the Officers ACP who wonder what's different between the Officers ACP and the M1911A1. There are, in fact, a lot of parts that are subtly different. The author laid these drawings out to mirror the official Ordnance Department blueprints for the M1911A1, so with a set of those drawings (available from various places on the Internet) it's now possible to do a detailed comparison.

Enjoy!