good day - it comes with directions, mine were black and white, with poor pictures..... but I was able to wade through it just taking my time. Is there a particular question you might have? Many here can help you in an instant.
Took me all of 20 minutes and 1 modified part to get my ATI installed.... I still haven't had the time to change back to the Factory stock... Will have it done by this weekend so I can take it to the range and see if it works.