Lessee, now. Briley has a linkless gun, Storm Lake makes a conversion barrel, Springfield made a few 10mms on the Peters Stahl system (similar to H&K USP), but with a standard slide. There was the Omega, which was the whole Peters Stahl upper on a 1911 receiver.
I have a 9mm Jarvis Kam-Lok on a 1911. It is very finicky as to ammo; it needs round nose bullets for feeding and heavy bullets at transonic velocity for function. It is pretty much like loading a caliber of its own except for common brass. Perhaps I made a mistake getting it in 9mm for IDPA ESP and a heavier caliber would work better. I won't make such a mistake again. BHP, CZ, Sig, SigSauer, Glock, and H&K do just fine with linkless barrel unlocking, but my 1911s will keep their links.
If you want something really off the wall without a link, look at the NCG Gas Gun, or the Craig Vortak, with gas retardation like the H&K P7.