Plainfield Machine Company Assistance

Post WWII Commercially Manufactured M1 Carbines (U.S.A.)


Assistance Request


Research Project #1

I am attempting to reconstruct the month and year these carbines were manufactured. If you have any of the following information, it would be great assistance in sorting this out.

(A) I am trying to locate owners who purchased their carbine when it was new and still have documentation that indicates the month and year.

(B) I am on a constant hunt for catalogs, manuals, sales fliers, etc for all of the commercially manufactured carbines. If you have one of these items, please consider sharing a copy. I don't collect these items, I'm interested in the information they contain so I can share it here.

If you have this information and are willing to share, please contact me...

Research Project #2

Below are questions numbered 1-4. Each number has one or more pictures showing what I'm looking for. Each picture is identified by a letter. All you need to do is e-mail me with the question numbers 1-4, and indicate the answer (a, b, c, etc) after the number. Here's an example you can copy/paste into your e-mail and edit it to correctly match your carbine.

[1] 1234x
[2] A B C D
[3] Yes No
[4] A B

If you have anything else you'd like to share, feel free...

[1] What is the complete serial number (i.e. 12345 or H123)?

In lieu of the complete serial number feel free to substitute an x for the last digit (i.e. 12345 as 1234x or D123 as D12x).

[2] Which of the following depicts the markings on top of the receiver in front of the bolt?

A) There are no markings.
B) Plainfield over Machine
(without Dunellen, N.J.)
C) Plainfield Machine over Dunellen, N.J.
D) Plainfield Machine over Dunellen, N.J.
Model #       M-1

If your answer is D, please include the model number.

If your markings are different than those shown above I would very much like to hear from you. Thanks.

[3] Are the letters PMC located somewhere along the top of the receiver behind the rear sight?

Yes or No?

Note: They may be closer to the rear sight than depicted here.

[4] Is the serial number:

A) inside an oval cutout?
B) just stamped on the side of the
receiver with no oval cutout?