I thought the Army already had a high frequency of jams with the AR and that's why they were looking at piston drive. Low Bid isn't always best. Remingotn has had issues keeping up Marling quality. I gotta wonder how well they will fill a government contract?
The M4 is a very reliable weapon---I worked on M4 ranges for 3 years and can tell you that easily 90% (probably more) of malfunctions are due to improper maintenance (user error) or bad magazines.