I run 3 Ruger uppers a 3” Target MKIII, a 4 3/4” Standard MKII with Volquartsen tall front sight and their fully adjustable TL rear sight. Also I have a stock Ruger 6” Standard. My other 3 uppers are PacLite with barrels of 3 1/2”, 4.4”, and 6”. Two of these barrels have orange serrated front sight inserts done by Dennis at SGW and are great sights that work better for me in dim light than light pipes. I mix and match these six uppers on three different Volquartsen 1911 style Target Frames all with the same style Hogue rubber grip panels. I shot Ruger 22/45 Frames stuffed with all the goodies for a while but once I picked up the Volquartsen frame it felt and shot perfect in my hands. The Rugers with upgrades always had differences after being finished but with a blinbfold on it would be hard to tell which is which of the Volquartsen Frames. The 6” PacLite barrel has had the barrel contour turned down to that of a Ruger 5 1/2” Target Model and wears a Volquartsen rail system. The system comes with their target sights and upper and lower rails in a 1pc. Unit. This assembly is being turned into a SBR.