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Standard Product Barrel Markings

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mkneill21 View Drop Down
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    Posted: Jul 06 2019 at 6:25pm
I recently bought a Standard Products M1 Carbine. I've had many carbines but I have never seen a barrel with this marking. Can anyone tell me the manufacturer of this barrel?

Thanks

https://photos.app.goo.gl/yRF4ZJLmDEAQbc3m9

There are no marks under the barrel band, but closer to the receiver there are 3 marks. There is also a P stamped up by the muzzle.

See attached pics

https://photos.app.goo.gl/np2VfnczyRkAqyBk9

https://photos.app.goo.gl/QFyjHcNGv1igYFvT7

https://photos.app.goo.gl/82tgTBecCcsfcGbo6

Appreciate the help

Edit - There is also a crossed cannon stamp on the bottom flat of the barrel right by the receiver.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote m1a1fan Quote  Post ReplyReply Direct Link To This Post Posted: Jul 06 2019 at 6:36pm
Greetings and welcome to the club.

Looks like a sideways BA for Buffalo Arms.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mkneill21 Quote  Post ReplyReply Direct Link To This Post Posted: Jul 06 2019 at 6:40pm
Thanks.   I've got several carbine books and info and never seen anything about Buffalo marking them that way.  Really I had no idea what it was.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote m1a1fan Quote  Post ReplyReply Direct Link To This Post Posted: Jul 06 2019 at 7:17pm
Hard to tell in the photo if it is or not. Here's a link to a BA marked barrel.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Why Carbines? Quote  Post ReplyReply Direct Link To This Post Posted: Jul 06 2019 at 10:07pm
Is the gas cylinder swaged on? If so it could be a Buffalo Arms barrel. Honestly, I can't tell a lot from the pictures shown. Standard Products used more than one type of proof P so it can be kind of tricky
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Dan Pinto, Photo Editor

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Post Options Post Options   Thanks (0) Thanks(0)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Jul 07 2019 at 12:08am
what serial range SP?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote m1a1fan Quote  Post ReplyReply Direct Link To This Post Posted: Jul 07 2019 at 7:16am
Markings found on a S'G' with a Buffalo Arms barrel. BA marked there barrels in a variety of ways. This one is marked
Buffalo Arms
9 - 1943



Ordnance bomb and Crossed Cannons



Still don't have a good grasp on barrel P marks. Think this one is a different font since it is on an S'G'.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote mkneill21 Quote  Post ReplyReply Direct Link To This Post Posted: Jul 07 2019 at 8:41pm
2,150,xxx serial number
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Post Options Post Options   Thanks (0) Thanks(0)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Jul 07 2019 at 9:51pm
the BA marking is from around 6-1943 and the earliest Bufflo marking. Shortly after they dated the barrels.
Early information shows Buffalo Arms barrels have been observed in the 2038xxx to 2048xxx range.

CCNL 384 has a chart of all the P proofs. It was noted that there were two proof Ps for SP but the author had only observed one style.

A follow up was published

If the size in 64ths can be established I would say that is the early SP proof, but how it wound up on a later serial number is a mystery.
Normally we would say "first in, last out" for the barrel. However the proof is applied once the carbine is built and proof fired.

Do check for a second proof as Buffalo was required to proof barrels as well. Might be under a barrel band. Originally all barrels, but later the requirements were something like 100 in every 1000. I am drawing a blank when the change took place . I believe late 43.
Interesting is that your receiver should have a late 43 or early 44 barrel.

Could it be that this barrel was a last out or sidetracked at Buffaalo?

The only other serif P I believe was early inland and IBM, neither would have used Buffalo barrels 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Why Carbines? Quote  Post ReplyReply Direct Link To This Post Posted: Jul 08 2019 at 1:35pm
It might help to look at the staking ( if any ) behind the front sight. SP had an unique staking of dots, either at the base of the sight or even on top of the barrel.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jackp1028 Quote  Post ReplyReply Direct Link To This Post Posted: Jul 08 2019 at 2:54pm
@Why Carbines? Are these the stake marks you are describing?



This 2,113,XXX SP has the smaller non serif "P" proof mark.
JackP
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Why Carbines? Quote  Post ReplyReply Direct Link To This Post Posted: Jul 08 2019 at 7:36pm
Yes, from what I see. They either dotted the barrel or the back of the sight itself on either side of the sight key. I am not going to say they staked it that way every time, but most of the ones I have had were staked behind the front sight.
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