Newbie here with a couple questions about Model 97 and 12 US Military marked Shotguns

[Huckleberry]

Hi,
I have an opportunity to buy a couple of US marked riot guns with matching numbers and what appears to be appropriate Ordnance markings. I have no pics and the history is unknown on these.
First, the Model 97: Serial 925059 Riot with Full marked bbl, but has Ordnance bomb and deep CYL on bbl also. What I have gathered is that it is a WWII 97 in Riot configuration with left receiver US and bomb marking above trigger. Measured from bolt face to end of bbl is 21in. Is this a USGI that was cut down and riot configured by an Arsenal?? There are no notches on the end of the barrel to indicate Trench configuration.
Second, the Model 12: Serial 1479083 Riot with Full marked bbl, but also has Ordnance bomb on bbl. US and bomb on right side of receiver which looks just like my real USGI riot but also has U.S.P.S. just under the above marking on the receiver and stamped into the left side of the stock. This also measures 21in. from bolt face to end of bbl. My question on this one is,
Are all Ordnance marked riots USGI?, and was this possibly a cut down version for US Postal Service use post-war?? For all my research, I can't seem to be able verify the numbers to USGI. Hope these aren't humpers.
Thanks,
Huckleberry

Information

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[scosgt]

Based on serial numbers, the M97 COULD be a real riot.

The M12 is way over the range, and is not a military gun.

[Tom Doniphon]

If both guns have "Full" marked barrels, then they started out as long barreled shotguns. Someone cut the barrels down to riot length.

Photos of the marks would help determine if they are real.

[Huckleberry]

I went to look at them again with a loop to see the dates under the barrels. The Model 97 has a 51 with an R below it. The Model 12 has a 52. The 12 has a 43 deeply struck next to the Full on the barrel.

Again, both models have the ordnance bomb and matching numbers???.....Confusing to me. Pics would definitely help, but they are at a Pawn shop. I might just go ahead and take a camera up there. The worst they can say is No. Which is where I am at anyway.

Thanks again,
Huck

[scosgt]

If the M12 barrel is marked full, it is NOT an original riot gun.

The 97 should have a barrel dated 40 or 41.

---------- Post added at 04:22 PM ---------- Previous post was at 04:21 PM ----------

Just re-read the first post. 97 is also marked full.
Both are humpers. Stay far away.

[Huckleberry]

Is it possible that these were post war conversions for Govt agency, Prison guard, State, or Commercial, etc use?? Especially,
With the Model 12 having the USPS stamp in the receiver and stock? The 12 having the Full marked barrel then struck CYL????
And I know pics would help.... Any thoughts on post war conversion for Commercial/civilian or Govt use???? Especially, if these were surplus.....

Thanks,
Huck

[scosgt]

ABSOLUTELY NOT

The Govt did not officially convert any M97 shotguns, they were considered surplus.
Mod 12 shotguns were converted - to trenchguns.

BUT, your M12 serial is way too high for WWII. It is a total humper.

Run, don't walk away from those guns. Save your money for the real deal.

[Huckleberry]

Thank you scosgt.

I found myself wanting them to be Military, but I went ahead and walked away today. So, I think I will wait to find another or save my money for an original.

God Bless