Suppression fire saves lives. The point of fire superiority and suppression fire is not necessarily to hit the enemy, but to deter them from aggression all together. A great deal of military doctrine is based upon this principal.
The feeding sucks and it jams all the time. I have frequently been failed during peak moments and firefights in training missions no matter how well my M16 was maintained. The worst part about is that there are much better weapons on the market using the same round and that would require little retraining for our military.
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For further reading: http://www.armytimes.com/news/2007/1...sttest_071217/
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