Cod4 g36c help plz!?!?!?

i like the m4a1 but i w recently told the g36c is way better once u get red dot 4 it... ive trie dit be4 but it seems so innacurate but suppsoedly there is no spray recoil what so ever and when u have a red dot on it it reduces recoil when aiming... is this true? how many bulletes does it take to kill sum1 WITH stopping power? and dus any1 have any good info or pointer on the g36c... thnx