I've got one very Similar.
Its a top cocker and uses the AR magwell with adapter for sten mags.vs that side load.
bbl is longer on mine.
I'll dig up the article on it in a bit.
This may or may not be correct info below but makes the most sense that mine came from Alan. Lots of likeness to my Vanguard upper for M11/9. This guy did lots of odd stuff.
Alan Graetz of Vanguard Firearms was on hand with a few new and interesting products. The first is a major upgrade for the M10 & M11 shooting systems. The Vanguard Subgun Assembly (VSA) offers an attractive new look for the M11/9, M10, and M11/.380. This system offers comfort and control for the user of the high RPM subguns by utilizing an adjustable site, integral optics mount, fore grip, muzzle guard, and ambidextrous cocking knob. The entire assembly is parkerized to match and there is no permanent alteration to the firearm needed. Adapters will soon be available for suppressors. This new subgun assembly will be available April 2005 for $400. The second item of interest is their Franchi conversion from the registered transferable model 1962 to the LF57. They will make this conversion using the customer supplied parts kit for $400.00. The example we looked at was terrific in workmanship and finish. (Parts kits are currently available at Long Mountain Outfitters
www.longmountain.com).
