Field expedient workarounds for a M1/M1A1 main spring?

[p51]

After assembling my M1A1 BFONG a few times after cleaning, I realized that the main spring and buffer are hard to get into proper place.

As a veteran myself, I know that GI ingenuity usually finds easier fixes for oddly designed things. Did soldiers back in WW2 ever design something that allowed the spring to be more easier slid into the back of the bolt?

I dont know any WW2 vets to ask about this like I used to. I was just wondering...

[TSMGguy]

Which BFONG do you have? Is it laid out identically to a USGI gun?

Edited July 18, 2025 by TSMGguy

[PK.]

When reassembling, retract the bolt 30%-50% and then insert the spring and pilot, allowing the bolt to move forward with them as they fill the gap that would normally allow the spring to escape.

[Bridgeport28A1]

Does your M1/M1A1 BFOG have a different spring buffer set up then a USGI M1 Thompson? 

[p51]

51 minutes ago, Bridgeport28A1 said:

Does your M1/M1A1 BFOG have a different spring buffer set up then a USGI M1 Thompson? 

No. But Ill be looking at reassembly as described above. I figured there had to be a workaround to that spring.

But most of all, I wanted to be able to discuss and show how GIs did it quickly in the field when I do displays at public events.

 

Edited July 18, 2025 by p51

[StrangeRanger]

It's a three handed job ?

I have a small piece of wood (about 2.5") that I place between the front of the square section of the bolt and the hammer impact surface of the receiver

I install spring, rod and buffer then pull the charging handle back a hair, remove the wooden piece and ease the bolt forward 

Edited July 18, 2025 by StrangeRanger

[p51]

Thanks, all. I knew it had to be easier than the TM called for!

[Bridgeport28A1]

The M1 buffer pilot and spring installation and disassembly is a piece of cake compared to a 1928 Thompson.