-1 bolt heat lot

[Moorem1s]

Without getting too wrapped up in heat lot discussion, i can only find one data sheet with the J4 lot on a -1 bolt. The sheet in reference is in Pyles book and its around serial 10500 i believe(at work now so I cannot check). Any other data sheets on traps with a J4? Thanks.

[Jersey Devil]

Page 222 of "The Gas Trap Garand" (Mr. Pyle's book) shows SA #10355 as having a -1, J4 bolt.
I'm sure that was the one you're speaking of. I'll have a look at some other data sheets and check for you.
Cheers and Happy New Year!!