LeMag was the name of the company who made the conversions of .30 cal. carbines to larger more powerful cartridges in the 1990's. Judged theoretically unsafe due to the power of the cartridges, they've been in use now for over 20 years with no known failures. One owner in AK told me hunted with it without any issues. Larry's features a Choate fixed stock made specific for LeMag. The barrel is a commercial barrel with a gas piston housing modified for the .45 WinMag cartridge.
Depicted in the 1990's Shotgun News ad included below are Uzi Gal, Timothy LeGendre (owned LeMag), and Mikhail Kalashnikov (holding one of the LeMag conversions).
The color image of Kalishnikov holding a LeMag carbine was in Larry's files. Unknown where he obtained it. The barrel is longer than the barrel on the one being offered.
Includes sling and magazine modified for .45 Winchester Magnum.
The carbine below is depicted in War Baby! volume III, p. 1510, image 1745.