Yeah have done all the RC missions. Went round to steves and did the mini gun one first go, he was soooo pissed at me

They are had. For the minigun one go and practice on a Amunation gun range, helps loads. Lead the plane too so it flys though you cross hairs and try not to follow it cus its harder to hit them if you try and aim directly. They dont take a lot to kill.

Secondone is just practice. But go for the first Van, the cyclist, then the two bikes and the last Van (I think thats right, can't remember the order). The bike come from the front. The quicker you take them out the better cus if you get to shot up for the bike with passenger who has a gun he will take you out no problems.