I have an ORIGINAL Interdynamic KG-9. Interdynamic AB of sweden was the company to design the "Tec-9 style" of firearms. They made a subsidiary to market the guns in the U.S. and named the company Interdynamic of America, located in Miami. This was in 1981/2. The design was a F/A open bolt style aimed at military/police but only a couple agencies bought the gun. Unwilling to give up on the gun, they marketed a semi-auto version called the KG-9, still an Open bolt, to civilians in America. The gun was very popular (cuz its bad ass) and did well until the BATF deemed the open bolt style "readily convertible to Full Auto". After only 3500 were made in the original Open Bolt style, the company started making them in closed bolt right around the time that the open bolt MACS were banned as well. Only 3500 were made. The company then changed its name to intratec. Whats cool about these guns is that they are what the original design of the "tec-9 subgun" was supposed to be. Just like the open bolt Macs are the real stuff, so are the open bolt tecs. The thing is that the Open bolt KG-9s are even harder to find than the Open bolt macs. A cool fact is that George Kellgren, the designer and owner of Kel-Tec company, helped design the final version of the Interdynamic KG-9. It is a bad ass gun. The tec-9s developed a bad rep becuz of jamming problems, but that was easily contributable to aftermarket and damaged magazines, as well as stupid people trying to use flat nosed rounds. WHen using 115gr fmjs, or round nosed hollow points, my intratec DC-9 runs flawlessly. With wolf 115 gr. fmjs, the 10 rounds I put through the KG-9 ran flawlessly. All parts except for the open bolt and the tiny bit of a longer sear are interchangable with the closed bolt tecs, and parts for the tec are always available on intratecparts.com or e-gunparts.com. Gun comes with two factory mags, original manual, original kolpin soft case, assault sling. Finish is flawless, Bought it from a man in WYOMING who NEVER shot it, he bought it from the original owner,(his friend) in a package deal, so he could get one other gun he wanted. The original owner shot it back in 1983. He shot ALMOST 5 mags through it.(32 rd mags) And he cleaned it after each shooting. ( you can tell because the assembly pin has been removed to clean. Other than the fact its been shot, gun is flawless. I bought it for $1390 total, I will sell it for $1300 since I shot only ten rounds thru it, and these guns keep going up. The last one I saw that was in okay condition sold for $1200 on gunbroker, and another that was in great condition like mine sold for $1600. Search for interdynamic KG-9 and you will see old GB.com listings and old gunsamerica listings. Only about 2 a year surface for purchase.