Normally I modify the ones I use for myself and they are not that difficult to work on. However liability will now allow me the freedom to work on someone else's trigger.
Midway was selling Timney triggers earlier this year but sold out. I have noticed that they have some more as a discontinued item.
Product #: 887504
Manufacturer #: 788
Our Price: $79.99
Note that the 788 triggers are the same as 540, 580. 581, etc..... Don
