Some complained that the Timney 10-22 trigger of old was too hard to install. I did not think it all that difficult but know some folks that could probably not install one with help from John Vehr (The guy who owns Timney) himself.
At any rate, for 2011 Timney has a new fix for the 10-22. This is a complete trigger housing and all you have to do to install it is push out two pins, replace the old housing with the new one and put the two pins back in. Hey, A caveman – and even a gunwriter – could do it. (Can you imagine what a caveman would have done with a 10-22 and a brick of ammo?)
This unit is priced right too, especially considering that it has an extended magazine release built right in.