I did have 3 of em, one each for me, my son and my dad, great little rifles, I put Lyman 57SML sights on all of em, shot the lyman 457122 in a sabot real well as did the 400gr Harvester hardcast in sabots, both with Goex 2f. The locks are TC clones, but the mainsprings were a bit weak, so I replaced them with TC mainsprings. These were bought back when they were considerably less than they are now, dunno if they've made any changes, but they were great rifles for the money and had chrome lined bores which I don't think the new ones have.
Tim