Can be tricky to install if you don't know what you are doing.
Well I installed this trigger on my gun about a month ago now and it is amazing. Compared to the stock trigger there is no side to side movement or resistance. This trigger is so smooth I can't even describe it if you haven't shot a gun with one. I can maintain long stings of fire with ease and with the quick response and smoothness I am able to fire faster by at least 2-3bps faster. Another thing the design of the trigger is very comfy your fingers will have no problem getting used to this trigger.
Conclusion get it if you don't have it. You will not regret it.