I'm not sure where this underlug business really got its start, but I was around when it really got rolling. A term that relates most commonly to DA/SA revolvers, underlug refers to an integral extension of metal that runs along the bottom side of the barrel. Although underlug-like fixtures are found on some of the Frontier-era S&W break tops, I think the first gun to have one (in the modern sense) was the Triple Lock of 1908. It was necessary for the complex locking system of that magnificent old gun, but it came to be highly regarded because it protected (or shrouded) the revolver's ejector rod. These shrouds are still a regular feature on most of S&W's N-frame revolver models. However, not until the 1950s did we see a shroud on the barrel of a K frame. It was on the Model 19, developed at the instigation of the late Bill Jordan. Bill was a real humorist at times; I can remember him chuckling over the use of an ejector rod shroud like it was a Holy Grail. He called it a “stroud,” solemnly assuring his listeners that every gun needed a good “stroud.”
December 09, 2010
