The gun is of 2013 manufacture. This was the second TRS, with the first one being replaced, with a new OEM spring, at 5k rounds as recommended. I intentionally let this one ride to see how long it would last. The arm contacting the trigger bar broke near the coil. No big controversy here guys, just a data point. Everything breaks eventually. If anything, this reinforces the wisdom in having a dedicated training gun.
As for the Wolff replacement unit. I've tried it and had problems with sluggish trigger return. I don't recommend it.
We may lose and we may win, but we will never be here again.......
Well, so much for that old theory. Two people right here had theirs break at the coil. Thanks guys.
I don't think that the flatwires pencil out anyhow in terms of cost-effectiveness; "regular" recoil springs are really pretty inexpensive, and with many/most flatwires, you're going to need a new recoil spring guide and plug as well as the flatwire recoil spring itself.
Best, Jon