I am thinking of buying a Daniel Defence m4 (I know where i can get a deal on one). in order to get better accuracy i am going to replace the trigger and barrel. For the trigger i was thinking JP or the geissele 3-gun trigger and for the barrel i was thinkin a jp 18" medium contour or a les bear 16" bull barrel. Anything else that you think would help the accuracy as much or more than the barrel or trigger please let me know(and yes i know practice and the correct ammo for the barrel are the most important and high quality glass goes with out saying). anyother recomendations on barrels and triggers would be nice. What i am realy looking for is your opions on this setup and how well you think it will perform accuracy and relibility speaking. Thanks.