I bought a Detonics Combat Master, a “chopped” 1911, when I was 21 years old, in late 1982 or early 1983. It would feed empty cases, all day long, but was unreliable in live fire, with 230-grain FMJ. I fed it a few 200-grain JHPs, which it fed fine, in live fire, but I could not afford to train with JHPs, which were relatively so very much more expensive, in the early Eighties. I never carried this one, and sold or traded it, about 1984 or 1985, when I was a rookie LEO, and needed duty/carry revolvers, rather than autos, which I was not yet allowed to carry.
In my late fifties, a couple of years ago, I became nostalgic, for some of my early guns, and bought a “replacement” Detonics 1911, but not one of the small ones, which require a special, proprietary recoil spring assembly, no longer being made, as Detonics is defunct, but a full-sized 9-11-01 commemorative, which can use a standard Government Model recoil spring.