Bergmann MP18 Based SMG: What is it?

[johan willaert]

Can anyone identify this SMG, marked 'AUTOMATIC MACHINE PISTOL TANNER'S PATENT'' & 'Model 1923'

It seems to be based on a German Bergman MP18, and uses the Luger Artillery style Snail Drum magazine (Marked B/N)
Yet, the markings are in English. The scope is easily detached and the forgrip looks like it came off a Luger. This grip has a built in 'press-lever' safety.
I have never seen anything like it....
Is this a one off?
Thanks for your help or passing on to someone who knows...

[Nimble1]

Sure looks like a MP18 that someone has "dolled" up. Too bad...
Is it functional?

[johan willaert]

But the markings seem to be perfectly done and there are no traces of original Bergman markings..

[MauserKar98k]

That is really strange. I don't have a clue what this is. I'd like to find out though.

[Voldbjerg]

Perhaps it was made in the field by a gun smith?? He might have used the scope and luger grip from destroyed guns??

Or post war assemble made for hunting purpose?

* For got to add: the stock is probably post war or heavily modified, it sure looks very much like the stocks on our Sako-rifles.

[Matt Weber]

Looks like a basement gunsmithing job to me! He changed the stock, added a luger pistol grip to it, and added a commerical scope and mounts.
Why in the world would anyone put a scope on a machine pistol is anybody's guess?
I agree with "nimble1", too bad, someone ruined a nice Bergmann.

Matt

[psum240b]

I wonder when this conversion took place. interesting to say the least with a forward pistol grip and scope. wonder if an armory was using it as a base for modifying other weapons. rather odd to add a scope to an mp though

[Nimble1]

It is an odd one! In looking at it again, I see that it actually has 3 different sights on it..the scope,the original leaf sight on the tube and a tang sight. The tang sight does not even appear tall enough to work and what is the little lever on the rear of the receiver?
Also would love to see a close-up of the Luger grip emblem.

[johan willaert]

Sorry, Tom, this is the best picture I received....