I am les familiar with the foundry work side of 1911 making, so the beginning of this video is a treat for me.
But the stuff I do know a little about starts about 22 minutes in.
That lapping the slide to frame fit is fine. Not very tight, doing it that way, but it is a perfectly adequate for a functioning gun. We did it a bit tighter.
Then Keegan assembled a gun in fast motion. Drop in parts. He didn't even need to file, oh, the thumb safety? To get it to fit and function. They must spec the parts really well.
Or... More likely... That gun was fitted up and smiffed in the other room the day before, then disassembled to show assembly for the cameras. Yeah. Gonna say that.
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I seem to remember that there was a lawsuit between Maximus Arms and Precision Casting of Tennessee. I'll need to dig it up again.
What bothered me was that Maximus Arms attempted to patent the long-existing Caspian Race Ready single-stack frame design by simply making the ejector integral to the frame.
Precision Casting of Tennessee, Inc. v. Maximus Arms, LLC et al (Tennessee Middle District Court - Case Number 3:2014cv02351)
From what I can determine from the US patent application's global dossier at the USPTO website, Norman Anthony Bellione (Maximus Arms, LLC) presented a pistol built from a Caspian "Race Ready Recon" frame to T. Allen Bransford (Precision Casting of Tennessee) and asked him to reverse-engineer it. Bransford claimed that the idea to cast the frame from 17-4PH Stainless was his idea. (Caspian uses 416 Stainless.) Because of the machining difficulty in drilling the 17-4PH frame with the three holes for the ejector legs and its cross pin, Bransford recommended that the entire ejector be integrally cast with the frame. Bransford also recommended other modifications such as deepening the step at the front of the integral magwell.
Basically, Bransford was claiming that since much of the redesigned frame was his own work, he should be considered at minimum co-inventor.
I spent the years of my life from 18 until 53, that is 35 years, in a factory that makes steel for the investment casting industry. So I am used to this sort of thing. We made steel for remelt and pouring into molds like this, for damn near everyone at one time or another. When I retired, we were making steel for Sturm Ruger, Pine Tree Castings, and a couple of the big investment casting places that I can't remember their names now, that supplied for the industry. PTC was one that supplied for a lot of them, as well as Ruger.
When things got slow, back in the so called great recession of the 2008 timeframe, we got a huge order from Columbia for alloys like 6150, 410, and some 17-4. It was for AK 47's
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