Help with Broken Bolt Damaged Receiver M1 Carbine

[painter777]

Hi Jeff,
I remember the first time I took a close look at the carbine we grew up with that my Father snuck home from the Philippines. After looking at the bottom left guide way that the bolt's left lug rides on top of .... I seen the shape of it and thought it was messed up, with metal missing. Made me sick, but later learned it was how it was suppose to be. I'm using your picture here to show it. Increase the picture size and It looks like primer cup fragments laying in the track or something like it....... Doesn't it ?



For now get a few of 'HIS' reloads so the loaded casings can be measured for Length.
Closely look over the inside of your chamber for any obstructions.
Then read this link, It's very important that no burs are on the right and especially the left bolt guide ways. We'll address the bolts' left and right locking shoulders later. Be sure to see figure 50 on page 76 .

Take a breath and read this... paying close attention to anything INSPECTION related... like : knocking down burs on the bolt lug guide ways, op slide track... etc

I'll pull out a Rock ola receiver so we can swap pictures for comparison Wednesday.

http://www.90thidpg.us/Reference/Man...-1276_1947.pdf

Charlie-P777

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[painter777]

After looking at the bottom left guide way that the bolt's left lug rides on top of .... I seen the shape of it and thought it was messed up, with metal missing.

Mine has some wavy cut outs and I don't know if that's machining or not.

You're seeing what I tried to describe in my Quote above from post #9 on page 1. Not knowing any better at that time, I thought that carbine was ruined.

Those wavy cuts allow for the needed left bolt lugs movement, while the bolts right lug is being rotated while attached to the Op slide. One notch on that left rail IIRC allows clearance for the rim of the next casing as it feeds up.

I'll try to put the pictures you requested up Saturday for your comparison.

Charlie-Painter777