[majette]

it is not too hard if you have average ability. i would suggest learning the lem trigger, it is head and shoulders above the da/sa. think of it as a light sa with a long intitial/first shot takeup. here is a video i did explaining the lem trigger:

Quick BLACTICAL Training on the HK LEM Trigger - YouTube

Quick BLACTICAL Training on the HK LEM Trigger - YouTube