From Fox News: June 23: A new round replaces the current M855 5.56mm cartridge that has been used by U.S. troops since the early 1980s. The M855A1 offers a number of significant enhancements: improved hard target capability, increased dependability, consistent performance at all distances, improved accuracy, reduced muzzle flash and a higher velocity. It's tailored for use in the M-4 but also improves the performance of the M-16 and M-249 families of weapons. Anyone have any details about this stuff. I just wonder what makes it special besides the looks of the tips. Wanna kill these ads? We can help!