A new line of 1911s from Wilson available in single stack or double stack with barrel lengths from 3.5" to 6" with some interesting modifications:
All single stack EXPERIOR models feature WAVE frame rail clearance cuts for lower friction operation in adverse environments. The WAVE clearance cuts hold lubrication and ensure that your pistol will smoothly cycle even when caked with excessive fouling, sand or grit. A new EXPERIOR barrel locking lug design on the 9mm models has a reduced forward locking surface to further enhance cycling in adverse conditions or with reduced power loads without sacrificing accuracy or durability.
https://www.wilsoncombat.com/experior-full-size/