Question: is the hk416 better than the m4?
Answer: The HK416 has proven to be much more reliable (fewer stoppages for a given number of rounds fired) in all environments than the M-4. US Army testing showed a 75% reduction in stoppages vs the M4. ... (to be fair, some variants of the M4 have been upgraded to be Ambidextrous) More rail attachment space for accessories.