don't know. One was from freedom arms the others were probably wolff. The Fa one had a visible kink at one of the bends and that was thought to be the problem. the FA guy had a tackle box full of spare parts and replaced the spring right away. I think he had experienced the problem before.
I still trust 'em a lot more than the flat springs though the ones on the Uberti single actions and caplock revolvers are a lot better than they were a decade or so ago.
|