they are as easy to install as a factory rem is to uninstall.. i have 3 of them and they all work great..(too many guns to afford jewels). there is i think 1 more piece than a factory but its not that complicated!
Brien
I've used the Shilen trigger, but like the Rifle Basix better. About the same price, but a little better built, especially if you are going for a light trigger.
