I've got the .45 Magnum Staghorn which has a 1:28" twist, bought it new a few years ago from Basspro for $100 shipped, didn't like the front sight either, so I JB Welded a TC firesight on it, works very well with the Williams WGRS CVA rear sight. It's a basic inline, the first one I ever owned and is just as accurate as either of my TC Black Diamonds, shoots the same load as the .45 Super XR TC, 110gr FFF T7 and 295gr HP Powerbelt into 1½" with a scope, not quite as good with the peep, old eyes, ya know!!
I don't care too much for the K.I.S.S. "safety", but it works!! It does have the QLA, but it's only about ¼" deep compared to the ½" or so on the BDs.
Good shootin!!
Tim