I have not seen a list of 1911 makers who use Wilson or Para ramps in their frames. Here's what I know of. Feel free to add.
RIA, Tisas, Dan Wesson, Ed Brown
Springfield, Kimber, Sig, Fusion, Smith Wesson, Bul
What's your thoughts about bull barrels on 1911's? I've owned a few over the years, only have one now in the DW ECP. I'm not a bullseye shooter but could never tell much difference in bull vs standard in regards to accuracy for close range 1911 use. Bull barrels on all 4" 1911s that I have seen...