Reported by Defence News this week
The Cilas SLD 500 will be used instead of a cancelled rifle mounted acoustic system (I think this was from Ultra but not 100% sure)
The SLD500 had been purchased by the US Marine Corps in 2009 for evaluation but not adopted.
Read more here
Sven has written a good response over at Defense and Freedom, arguing that technology such as this is easily countered by a smart enemy
Click the image to read