1928A1 Receiver Drawing Changes?

[cocoabill]

I am messing around with some cut receivers I have for a display and found something that doesn't match the drawing so I am asking any experts out there. The 1928A1 drawing shows 1.25 inches from the inside back edge of the receiver to the end of the rail. I have one that looks like 1.25 and another that is closer to 1.6 inches. They are both 1928A1's (I think), so does anyone know if there was a drawing change?

 

Thanks

Bill

 

 

 

 

[cocoabill]

Found my answer should have thoght of it, the 1.6 inch is an m1. Not sure why they made the change but it must not be a critical demension.

 

Thanks

Bill

[emmagee1917]

No longer used the felt oiler assmly. , ergo no need to make the pocket cut to install it , therefore no need to mill the rails " short " to have the pocket there .

Chris

[reconbob]

Not all M1928A1's had the same machining at the back of the receiver. Here are 2 pieces of

cut receivers and you can clearly see the difference - this has nothing to do with M1928A1 vs. M1.

There are many discrepancies between the drawings most of us have and what you see in real life.

I have mentioned before about the somewhat dramatic difference in the radius of the corner rounds

on different receivers.

The drawing you posted looks to me to be a cut-and-paste job - copying the original drawing onto

a different sheet and adding an incorrect title block and embellishing with "CONFIDENTIAL" and

"RESTRICTED MATERIAL" to no doubt enhance any "original" claim....

 

Bob

 

http://i51.photobucket.com/albums/f392/reconbob/IMG_5697_zpsfa9f33f4.jpg

[mnshooter]

Found my answer should have thoght of it, the 1.6 inch is an m1. Not sure why they made the change but it must not be a critical demension.

 

Thanks

Bill

The two in your first photo are both 28's. Edited December 31, 2014 by mnshooter

[cocoabill]

Thanks all, as usuall this sight is the best.