Rock Ola barrel ??'s

[painter777]

Remember the $10K IP ?

1st picture shows a Real Rock-Ola gas cylinder
Bottom picture from the IP auction of fake Rock barrel




The same seller Ironman is currently offering a rebuilt IP with a RMC barrel (pictured below)
Question is:
Has anyone ever seen a RMC barrel marked/dated like this one ?
Anyone ever seen a Gas cylinder marked like this on a RMC ?










Anyone know if B&P Motor Sales who made and marked cylinders for Inland BI ever supply gas cylinders to another maker ?
Might the B just be a partial stamp ?
Something about this......... Because it's mentioned in the auction as:

We believe the 3-43 dated Rock-Ola barrel to be original to the Carbine. Interestingly, there is no Rock-Ola mark on the side of the gas cylinder but there is a letter mark on its front.

Here a link to the auction:

https://www.gunbroker.com/item/785712993


I'll give it a few days to see if anyone has any info....
Or curious/leery of it like I am.
Couple days and I'll pull a few RMC barrels to compare to.

Information

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