I received my Mark III Grip Frame today. It makes my Mark II look like a new gun. It is so much nicer with the 1911 Mag release. It was very tight fit to get the receiver/ Barrel on the frame. It will take a little while before it loosens up to break down.Now I will have to buy a used barrel and bolt for the Mark II frame. I even took the silver phoenix off the Mark II magazines and put them on the Mark III Magazines. Thanks to JStacey for naming it a Mark II.5. The new frame came with a Volquartsen target trigger but I like the older wider trigger better so I replaced it.Had to use the Mark II trigger pin though, the newer trigger pin was really tight on the older Volquartsen trigger that it would not even go through the trigger. Turned out nice and tight and very happy with it. Now off to the GunSmith for a Factory Ruger scope rail drill and tap installation.