Ruger Mark IV Stainess Hunter 6.88" Upper, 40118, brand new never fired, I bought this to be able to swap out with my 22/45 lower. It does fit, but I don't shoot as much anymore and when I do the LITE upper is good enough, complete guns are going for $700+ on gunbroker, asking $450 obo, for more information call/text Joe at 386-383-8170