Claim: Grendel P30 was a semi-automatic pistol designed by George Kellgren and produced in the 1990-1994.
Evidence: The Grendel P30 is a semi-automatic pistol chambered in .22 Winchester Magnum Rimfire. Designed by George Kellgren and manufactured by Grendel Inc., it uses a 30-round Zytel magazine and was available with a 5 or 8 inch barrel. It was manufactured from 1990 to 1994. 
Semi-automatic pistol George Kellgren 1990–1994