Let's get something straight here. There is a gun designer named Sirkris. His history is thus. He is a freelance gun designer. Has had or does have major input onto many gun companies makes and models. Grendel, Kahr, Kel-tec, Colt 2000 pistol,Israeli pistols and rifles, South African rifles and pistols, Taurus, and a 30 round .22magnum rimfire magnum pistol were all designed with his major input. As a badge or mark of honor, Sirkris designs the frames to look and be similar enough to show that this is his stamp upon the shooting world. Like a artist signing his painting , Sirkris, tell tale marquee will let knowledgeable people know, that it was he who" put the paint on the canvass". He is to pistols what Eugene Stoner is to rifles and machineguns. He does not sit on his laurels and is continually looking for new challanges. He helped Knight's Armaments design a cutting edge pistol that functioned well , was accurate, and dureable. They in turn sold the rights to Colt. Colt decided to fiddle with the design and made changes. Made the pistol bigger, made internal and external modifications to a design that didn't need them. Then put lawyer approved modifications in as well. This became the Colt 2000. It became a dog of a gun and had so many teething problems, Colt tried to unceremoniously sweep the whole debacle under the rug.Kind of like the Dornius and Dixon Bren 10 of gun fame. They lost their shirts as well considering the R&D money that went into the gun. The .22 magnum rimfire pistol he designed, functioned well enough, though there were some minor teething troubles at the start. The pistol did not sell as there was no market for it. Mas Ayoob and Evan Marshall tested the Grendel P31 and gave it glowing reports, but that was not enough to save it. Both authors pull no punches when they critique a gun. This guy has input at many gun companies in the past.So if things look familar on a pistol or rifle, and he was on the team or the soul creator, then do not be surprised.All his designs and the guns he worked on were different enough internally and were copyrighted byeach individual gun maker. Guess what happens when one infringes on another's patent in the cut throat gun market.? You either cease and desist from manufacture or get sued out of business by the company who holds the copyrights. Tell that to S&W who had to change their trigger on the Sigma because Glock got them on the trigger design. Building a knock off look alike or function gun gets one out of business real fast. Sirkris had the power and know how to put his moniker on a gun without this happening and he saw to it.