

The front of the lug is reinforced for strength. The serial number two letter prefix designated the type of carbine. This mold mark is consistent with those manufactured under the name of Plainfield Machine Co.ĭuring this sequence all models have the same markings on top of the receiver. Markings used on the commemorative models and 9mm Parabellum model are shown on the pages devoted to those models.Īs additional photographs are acquired this page will expand to include more information regarding the entire receiver with each markings and if photographs of better quality are obtained they will be used to replace what surplus Iver Johnson receivers that retained their markings and were sold by Numrich Gun Parts to companies andĪt the same time the variations in markings along with the serial numbers allows for estimating their dates of manufacture and what was done when.the addition 1985-1986 of the receivers manufactured by, and with partial markings of, Universal Firearms that were used to build Iver Johnson carbines.the tendency of the Jacksonville, AR facility to modify markings from earlier receivers or receivers from other models.the eventual sale of the company and it's surplus from one set of owners to the next.Reconstructing what was done with markings has been a bit of a challenge due to: Post WWII Commercially Manufactured M1 Carbines (U.S.A.)
