I came across a gun today at a new gun store.

It looks like a Thompson submachine gun except the receiver was round.

It was a 45acp, open bolt design, and very heavy.

The barrel was 16" and had two what looked like 30-35 round stick mags

Its marked Eagle Gun Co. Stafford, Conn 45/9mm MKII

The owner of the store didn't really know anything about it, he said he took it in on a trade.

Anyone here ever seen one or know anything about it? Thanks

Sounds like a real pile of crap, but I really wouldn't know. Never heard of them.

the info below is copied from a post on Calguns
It is one of the only things that showed up on a google search
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Eagle Gun Company, (NOT EAGLE ARMS) model Semi-Auto
in 45acp, featuring a 16.5" barrel, open bolt configuration with one
high capacity stick magazine, 30rnd. I have checked
ATF Federal Firearms Regulations Reference Guide and this model is not
listed as a banned weapon. Furthure I have talked to ATF Firearms
Technology Division about this piece and this is what they told me:
"Eagle Gun Co. was located in Stratford, Connecticut, they were in
business from 1964 until 1968, this model had a recall notice." The
ATF agent asked me to test fire this, which I have, to make sure
that it did not go full auto by holding the trigger down. The agent
said: "the gun is not classified as (any other) or a machinegun as
it would not have cleared the NCIC if it were so"...I have had one
hell of a time trying to find this in any of my published gun books
to include the Blue Books various editions, Gun Traders various ed.,
Modern Gun Values, Guns Illustrated various ed., Gun Digest, and the
Shooters Bible various. Knowing what ATF has told me now, I figure
damn few of these were ever made and probably fewer survived the recall,
so I think we have a rare collectible here. The foregrip is cast alluminum
and is hollow, the wood stock is hardwood, not sure if it is walnut
The one thing I noted immediately it's not near as heavy as
the old Tommy Gun copies out there today, postal scale says 10# empty.

Another variant of the Mark Arms Commando and Spitfire carbines.  A few of these, especially the Spitfires, were registered as MGs prior to 1986 - I have one in my collection.  Many of the internal parts - notably the bolt, recoil springs and rails, and mags - appear to be derived from M3 or M3A1 greasegun parts.  The grip housing is thick aluminum and were usually machined pretty rough with a black 'crinkle' finish. I've seen some pretty good mods people have done to the Spitfires in particular that make them look much more like a Thompson.