[azinwa]

Hello all

I recently purchased a Springfield M1-A #03736X it has an H&R barrel and op rod and a TRW trigger group.

My question is the bolt is marked

7790185
66118
X

It also has the number 7145 electro scribed lengthwise on the top of the bolt
along with the hardness test prick punch mark. There are also four very small pin punch marks on top of the right locking lug in the shape of the letter L.

Thank's in advance for the information.

N K

 

[Spitfire75]

66118 = Winchester.
The number electro-penciled across the top of the bolt MIGHT be the serial number of the rifle in which the bolt was originally installed. At least that's what I've heard...

 

[azinwa]

Thanks for the info

N K

 

[Quicksilvergoat]

Sounds like a keeper. Chock full of USGI goodies.

 

[azinwa]

Bolt info

I spoke to a nice lady @ Springfield today she told me my M1-A was sold as a receiver in Feb of 1986.

It took 26 years to find a permanent home

I do have one more bit of info to share, the receiver is also electro engraved with the letters "A10" underneath beside the rollpin hole for the stripper clip guide. Anyone have any idea's on what that might mean.

Thanks again

NK

 

[Spitfire75]

I don't know what the engraving means, but I've seen it (or something similar to it) on the bottoms of many SAI receivers. Maybe it's a production lot code or something?

 

[AR 50 BMG]

Hello all

I recently purchased a Springfield M1-A #03736X it has an H&R barrel and op rod and a TRW trigger group.

My question is the bolt is marked

7790185
66118
X

It also has the number 7145 electro scribed lengthwise on the top of the bolt
along with the hardness test prick punch mark. There are also four very small pin punch marks on top of the right locking lug in the shape of the letter L.

Thank's in advance for the information.

N K

not knit picking or trying to argue but the punch mark on a GI bolt are not for hardness testing but are actually a proff mark from being proff fired

the rest of the info you've gotten is correct