Irwin-Pedersen is now posted for review and discussion

[Bruce McAskill]

Rokwell, that is not where the impression from the IPW recoil plate would be. Not fall enough to the rear.

[Mikey51]

Rokwell here's some more pics for comparison. Has 2 on the slide, RP on front of the long blade of the rear sight, 2/43 Rock barrel with P. P in circle under grip. Hope this helps. Anyone in our group looking for a Reising ? Mike.

[rokwell]

Thanks Mike! Now that M2 marking on the side of the receiver. Logically, looking at your picture, it has to be that the M and the 2 were maybe held in a fixture, but not all one piece. This is because the M on yours is upside down! I still wonder what this stamping indicated!

[Bruce McAskill]

It is thought to be part of the machining operation/inspection on the receiver. It seems that all of the completed IP receivers I have seen have it.